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Aquino HBS, Canziani MEF, Barra ABL, Roque-da-Silva AP, Strogoff-de-Matos JP, Dalboni MA, Moyses RMA, Elias RM. PTH may predict early mortality in incident patients on hemodialysis: results from a large cohort. Int Urol Nephrol 2024:10.1007/s11255-024-04188-1. [PMID: 39222240 DOI: 10.1007/s11255-024-04188-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2024] [Accepted: 08/22/2024] [Indexed: 09/04/2024]
Abstract
PURPOSE Parathyroid hormone (PTH) is merit as a risk factor for mortality in patients with chronic kidney disease in prevalent hemodialysis patients in a U shape. Most studies, however, do not focus on incident patients and those who died within the first 90 days of therapy. We evaluated PTH as a risk factor for mortality in a large cohort population in Brazil. METHODS This is an observational cohort study that included 4317 adult patients who initiated hemodialysis between July 1st, 2012 and June 30, 2017. The main outcome was all-cause mortality. Fine-gray sub-distribution hazard models were used to evaluate survival in the presence of a competing event (kidney transplant). RESULTS Median PTH levels of 252 (118, 479) pg/mL. There were 331 deaths during the first 90 days of therapy (6.7%), 430 in a 1-year follow-up (10.7%) and 1282 (32%) during the 5-year study period. Deaths according to PTH < 150, 150-600 and > 600 pg/mL corresponded to 38.1%, 33.0% and 28.5%, respectively (p < 0.001). In an adjusted model, patients who started dialysis with PTH < 150 pg/mL had a higher mortality risk within the first 90 days, but not in 1 year and 5 years after starting dialysis. Analyses in a subset of patients with a repeated PTH in 1 year (N = 1954) showed that although persistent PTH low levels (< 150 pg/mL) at 1 year were significantly associated with all-cause mortality, this result was not sustained after multiple adjustments. CONCLUSION PTH < 150 pg/mL confers a high mortality risk in the first 90 days of dialysis. If this result reflects poor nutritional conditions, it deserves further investigations.
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Affiliation(s)
- Hugo B S Aquino
- Universidade Nove de Julho (UNINOVE), Sao Paulo, (SP), Brazil
| | - Maria Eugenia F Canziani
- Departamento de Medicina, Divisão de Nefrologia, Universidade Federal de São Paulo, São Paulo, Brazil
| | - Ana Beatriz L Barra
- Fresenius Medical Care, Rio de Janeiro RJ, Brasil
- Departamento de Medicina, Universidade Federal Fluminense, Rio de Janeiro, Brazil
| | | | | | | | - Rosa M A Moyses
- Departamento de Medicina, Divisão de Nefrologia, Universidade de São Paulo, São Paulo, Brazil
| | - Rosilene M Elias
- Universidade Nove de Julho (UNINOVE), Sao Paulo, (SP), Brazil.
- Departamento de Medicina, Divisão de Nefrologia, Universidade de São Paulo, São Paulo, Brazil.
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Granal M, Brokhes-Le Calvez S, Dimitrov Y, Chantrel F, Borni-Duval C, Muller C, Délia M, Krummel T, Hannedouche T, Ducher M, Fauvel JP. External validation of the 2-year mortality prediction tool in hemodialysis patients developed using a Bayesian network. Clin Kidney J 2024; 17:sfae095. [PMID: 38915433 PMCID: PMC11195611 DOI: 10.1093/ckj/sfae095] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2023] [Indexed: 06/26/2024] Open
Abstract
Background In recent years, a number of predictive models have appeared to predict the risk of medium-term mortality in hemodialysis patients, but only one, limited to patients aged over 70 years, has undergone sufficiently powerful external validation. Recently, using a national learning database and an innovative approach based on Bayesian networks and 14 carefully selected predictors, we have developed a clinical prediction tool to predict all-cause mortality at 2 years in all incident hemodialysis patients. In order to generalize the results of this tool and propose its use in routine clinical practice, we carried out an external validation using an independent external validation database. Methods A regional, multicenter, observational, retrospective cohort study was conducted to externally validate the tool for predicting 2-year all-cause mortality in incident and prevalent hemodialysis patients. This study recruited a total of 142 incident and 697 prevalent adult hemodialysis patients followed up in one of the eight Association pour l'Utilisation du Rein Artificiel dans la région Lyonnaise (AURAL) Alsace dialysis centers. Results In incident patients, the 2-year all-cause mortality prediction tool had an area under the receiver curve (AUC-ROC) of 0.73, an accuracy of 65%, a sensitivity of 71% and a specificity of 63%. In prevalent patients, the performance for the external validation were similar in terms of AUC-ROC, accuracy and specificity, but was lower in term of sensitivity. Conclusion The tool for predicting all-cause mortality at 2 years, developed using a Bayesian network and 14 routinely available explanatory variables, obtained satisfactory external validation in incident patients, but sensitivity was insufficient in prevalent patients.
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Affiliation(s)
- Maelys Granal
- Department of Nephrology, Hospices Civils de Lyon, Hôpital Edouard Herriot, UMR 5558 CNRS Lyon, Université Lyon 1, Lyon, France
| | | | - Yves Dimitrov
- Renal Research Division, AURAL Strasbourg, Strasbourg, France
- Department of Nephrology, CH Haguenau, Haguenau, France
| | - François Chantrel
- Renal Research Division, AURAL Strasbourg, Strasbourg, France
- Department of Nephrology Groupe Hospitalier de la Région Mulhouse et Sud Alsace, Hôpital Emile Muller, Strasbourg, France
| | | | - Clotilde Muller
- Renal Research Division, AURAL Strasbourg, Strasbourg, France
- Department of Nephrology Groupe Hospitalier Saint-Vincent, Clinique Ste-Anne, Service de Néphrologie, Strasbourg, France
| | - May Délia
- Renal Research Division, AURAL Strasbourg, Strasbourg, France
| | - Thierry Krummel
- Hôpitaux Universitaires de Strasbourg, Nouvel Hôpital Civil, Service de Néphrologie et Hémodialyse, Strasbourg, France
| | | | - Micher Ducher
- Department of Nephrology, Hospices Civils de Lyon, Hôpital Edouard Herriot, UMR 5558 CNRS Lyon, Université Lyon 1, Lyon, France
| | - Jean-Pierre Fauvel
- Department of Nephrology, Hospices Civils de Lyon, Hôpital Edouard Herriot, UMR 5558 CNRS Lyon, Université Lyon 1, Lyon, France
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Okada H, Ono A, Tomori K, Inoue T, Hanafusa N, Sakai K, Narita I, Moriyama T, Isaka Y, Fukami K, Itano S, Kanda E, Kashihara N. Development of a prognostic risk score to predict early mortality in incident elderly Japanese hemodialysis patients. PLoS One 2024; 19:e0302101. [PMID: 38603695 PMCID: PMC11008820 DOI: 10.1371/journal.pone.0302101] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2024] [Accepted: 03/26/2024] [Indexed: 04/13/2024] Open
Abstract
BACKGROUND Information of short-term prognosis after hemodialysis (HD) introduction is important for elderly patients with chronic kidney disease (CKD) and their families choosing a modality of renal replacement therapy. Therefore, we developed a risk score to predict early mortality in incident elderly Japanese hemodialysis patients. MATERIALS AND METHODS We analyzed data of incident elderly HD patients from a nationwide cohort study of the Japanese Society for Dialysis Therapy Renal Data Registry (JRDR) to develop a prognostic risk score. Candidate risk factors for early death within 1 year was evaluated using multivariate logistic regression analysis. The risk score was developed by summing up points derived from parameter estimate values of independent risk factors. The association between risk score and early death was tested using Cox proportional hazards models. This risk score was validated twice by using an internal validation cohort derived from the JRDR and an external validation cohort collected for this study. RESULTS Using the development cohort (n = 2,000), nine risk factors were retained in the risk score: older age (>85), yes = 2, no = 0; sex, male = 2, female = 0; lower body mass index (<20), yes = 2, no = 0; cancer, yes = 1, no = 0; dementia, yes = 3, no = 0; lower creatinine (<6.5 mg/dL), yes = 1, no = 0; lower albumin (<3.0 g/dL), yes = 3, no = 0; normal or high calcium (≥8.5 mg/dL), yes = 1, no = 0; and higher C reactive protein (>2.0 mg/dL), yes = 2, no = 0. In the internal and external validation cohorts (n = 739, 140, respectively), the medium- and high-risk groups (total score, 6 to 10 and 11 or more, respectively) showed significantly higher risk of early death than the low-risk group (total score, 0 to 5) (p<0.001). CONCLUSION We developed a prognostic risk score predicting early death within 1 year in incident elderly Japanese HD patients, which may help detect elderly patients with a high-risk of early death after HD introduction.
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Affiliation(s)
- Hirokazu Okada
- Department of Nephrology, Saitama Medical University, Irumagun, Japan
| | - Atsushi Ono
- Department of Nephrology, Saitama Medical University, Irumagun, Japan
- Department of Nephrology, SUBARU Health Insurance Association Ota Memorial Hospital, Ota, Japan
| | - Koji Tomori
- Department of Nephrology, Saitama Medical University, Irumagun, Japan
| | - Tsutomu Inoue
- Department of Nephrology, Saitama Medical University, Irumagun, Japan
| | - Norio Hanafusa
- Department of Medicine, Blood Purification, Tokyo Women’s Medical University, Tokyo, Japan
| | - Ken Sakai
- Department of Nephrology, Toho University, Tokyo, Japan
| | - Ichiei Narita
- Division of Clinical Nephrology and Rheumatology, Niigata University Graduate School of Medical and Dental Sciences, Niigata, Japan
| | | | - Yoshitaka Isaka
- Department of Nephrology, Osaka University Graduate School of Medicine, Osaka, Japan
| | - Kei Fukami
- Department Medicine, Division of Nephrology, Kurume University School of Medicine, Fukuoka, Japan
| | - Seiji Itano
- Department of Nephrology and Hypertension, Kawasaki Medical School, Kurashiki, Japan
| | - Eiichiro Kanda
- Department of Medical Science, Kawasaki Medical School, Kurashiki, Japan
| | - Naoki Kashihara
- Department of Medical Science, Kawasaki Medical School, Kurashiki, Japan
- Geriatric Medical Center, Kawasaki Medical School, Okayama, Japan
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Kim YH, Lee W, Kim KY, Kim Y, Ko A, Weon B, Lee J, Jin W, Kim DK, Kim YS, Lim CS, Lee JP. The estimated mediating roles of anemia-related variables in the association between kidney function and mortality: a National Health and Nutrition Examination Survey (NHANES) study. Sci Rep 2024; 14:6621. [PMID: 38503784 PMCID: PMC10951385 DOI: 10.1038/s41598-024-56877-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2023] [Accepted: 03/12/2024] [Indexed: 03/21/2024] Open
Abstract
Anemia is a common complication of chronic kidney disease (CKD), impacting long-term outcomes such as mortality and morbidity. Analyzing NHANES data from 1999 through 2016 for adults aged ≥ 20 years, we assessed the mediating effects of anemia biomarkers (hemoglobin, hematocrit, red cell distribution width [RDW], and mean corpuscular hemoglobin concentration [MCHC]) on CKD-related outcomes by using hazard ratios from a biomarker-adjusted model. Of 44,099 participants, 7463 experienced all-cause death. Cox proportional hazard models revealed a higher all-cause mortality risk in the > 45 years and CKD groups than in the early CKD group. Hemoglobin, hematocrit and MCHC were inversely related to all-cause mortality; RDW was related to mortality. Single mediation analysis showed greater mediating effects of anemia indicators on CKD and mortality in the elderly (> 65 years) population than those in the general population. In the multimediation analysis, the combined mediating effect of anemia was higher in the CKD population than in the general population. This study showed a proportional increase in the mediating effect of anemia with CKD stage, suggesting potential therapeutic avenues. However, further exploration of other mediating factors on kidney outcomes is necessary.
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Affiliation(s)
- Yae Hyun Kim
- Department of Internal Medicine, Seoul National University Hospital, Seoul, Korea
| | - Whanhee Lee
- School of Biomedical Convergence Engineering, Pusan National University College of Information and Biomedical Engineering, Pusan, Korea
| | - Kyun Young Kim
- Department of Internal Medicine, Seoul National University Hospital, Seoul, Korea
| | - Yaerim Kim
- Department of Internal Medicine, Keimyung University School of Medicine, Taegu, Korea
| | - Ara Ko
- Department of Internal Medicine, Seoul National University Hospital, Seoul, Korea
- Department of Internal Medicine, Seoul National University College of Medicine, Seoul, Korea
| | - Boram Weon
- Department of Internal Medicine, Seoul National University Hospital, Seoul, Korea
- Department of Internal Medicine, Seoul National University Boramae Medical Center, 20 Boramae-ro 5-gil, Dongjak-gu, Seoul, 07061, Republic of Korea
- Department of Internal Medicine, Seoul National University College of Medicine, Seoul, Korea
| | - Jeonghwan Lee
- Department of Internal Medicine, Seoul National University Boramae Medical Center, 20 Boramae-ro 5-gil, Dongjak-gu, Seoul, 07061, Republic of Korea
- Department of Internal Medicine, Seoul National University College of Medicine, Seoul, Korea
| | - Wencheng Jin
- Department of Internal Medicine, Seoul National University College of Medicine, Seoul, Korea
| | - Dong Ki Kim
- Department of Internal Medicine, Seoul National University Hospital, Seoul, Korea
- Department of Internal Medicine, Seoul National University College of Medicine, Seoul, Korea
| | - Yon Su Kim
- Department of Internal Medicine, Seoul National University Hospital, Seoul, Korea
- Department of Internal Medicine, Seoul National University College of Medicine, Seoul, Korea
| | - Chun Soo Lim
- Department of Internal Medicine, Seoul National University Boramae Medical Center, 20 Boramae-ro 5-gil, Dongjak-gu, Seoul, 07061, Republic of Korea
- Department of Internal Medicine, Seoul National University College of Medicine, Seoul, Korea
| | - Jung Pyo Lee
- Department of Internal Medicine, Seoul National University Boramae Medical Center, 20 Boramae-ro 5-gil, Dongjak-gu, Seoul, 07061, Republic of Korea.
- Department of Internal Medicine, Seoul National University College of Medicine, Seoul, Korea.
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Park Y, Lee JW, Yoon SH, Yun SR, Kim H, Bae E, Hyun YY, Chung S, Kwon SH, Cho JH, Yoo KD, Park WY, Sun IO, Yu BC, Ko GJ, Yang JW, Song SH, Shin SJ, Hong YA, Hwang WM. Importance of dialysis specialists in early mortality in elderly hemodialysis patients: a multicenter retrospective cohort study. Sci Rep 2024; 14:1927. [PMID: 38253679 PMCID: PMC10803298 DOI: 10.1038/s41598-024-52170-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2023] [Accepted: 01/15/2024] [Indexed: 01/24/2024] Open
Abstract
The early mortality rate in elderly patients undergoing hemodialysis is more than twice that in young patients, requiring more specialized healthcare. We investigated whether the number of professional dialysis specialists affected early mortality in elderly patients undergoing hemodialysis. This multicenter retrospective cohort study analyzed data from 1860 patients aged ≥ 70 years who started hemodialysis between January 2010 and December 2017. Study regions included Seoul, Gyeonggi-do, Gangwon-do, Daejeon/Chungcheong-do, Daegu/Gyeongsangbuk-do, and Busan/Ulsan/Gyeongsangnam-do. The number of patients undergoing hemodialysis per dialysis specialist was calculated using registered data from each hemodialysis center. Early mortality was defined as death within 6 months of hemodialysis initiation. Gangwon-do (28.3%) and Seoul (14.5%) showed the highest and lowest early mortality rate, respectively. Similarly, Gangwon-do (64.6) and Seoul (43.9) had the highest and lowest number of patients per dialysis specialist, respectively. Relatively consistent results were observed for the regional rankings of early mortality rate and number of patients per dialysis specialist. Multivariate Cox regression analysis-adjusted for previously known significant risk factors-revealed that the number of patients per dialysis specialist was an independent risk factor for early mortality (hazard ratio: 1.031, p < 0.001). This study underscores the growing need for dialysis specialists for elderly hemodialysis patients in Korea.
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Affiliation(s)
- Yohan Park
- Division of Nephrology, Department of Internal Medicine, Konyang University Hospital, Daejeon, Republic of Korea
- Konyang University Myunggok Medical Research Institute, Daejeon, Republic of Korea
| | - Ji Won Lee
- Division of Nephrology, Department of Internal Medicine, Konyang University Hospital, Daejeon, Republic of Korea
| | - Se-Hee Yoon
- Division of Nephrology, Department of Internal Medicine, Konyang University Hospital, Daejeon, Republic of Korea
| | - Sung-Ro Yun
- Division of Nephrology, Department of Internal Medicine, Konyang University Hospital, Daejeon, Republic of Korea
| | - Hyunsuk Kim
- Division of Nephrology, Department of Internal Medicine, Hallym University Medical Center, Chuncheon Sacred Heart Hospital, Chuncheon, Republic of Korea
| | - Eunjin Bae
- Division of Nephrology, Department of Internal Medicine, Gyeongsang National University Hospital, Jinju, Republic of Korea
| | - Young Youl Hyun
- Division of Nephrology, Department of Internal Medicine, Kangbuk Samsung Hospital, Seoul, Republic of Korea
| | - Sungjin Chung
- Division of Nephrology, Department of Internal Medicine, Yeouido St. Mary's Hospital, Seoul, Republic of Korea
| | - Soon Hyo Kwon
- Division of Nephrology, Department of Internal Medicine, Soonchunhyang University Seoul Hospital, Seoul, Republic of Korea
| | - Jang-Hee Cho
- Division of Nephrology, Department of Internal Medicine, Kyungpook National University Hospital, Daegu, Republic of Korea
| | - Kyung Don Yoo
- Division of Nephrology, Department of Internal Medicine, Ulsan University Hospital, Ulsan, Republic of Korea
| | - Woo Yeong Park
- Division of Nephrology, Department of Internal Medicine, Keimyung University Dongsan Hospital, Daegu, Republic of Korea
| | - In O Sun
- Division of Nephrology, Department of Internal Medicine, Presbyterian Medical Center, Jeonju, Republic of Korea
| | - Byung Chul Yu
- Division of Nephrology, Department of Internal Medicine, Soonchunhyang University Bucheon Hospital, Bucheon, Republic of Korea
| | - Gang-Jee Ko
- Division of Nephrology, Department of Internal Medicine, Korea University Guro Hospital, Seoul, Republic of Korea
| | - Jae Won Yang
- Division of Nephrology, Department of Internal Medicine, Yonsei University Wonju Severance Christian Hospital, Wonju, Republic of Korea
| | - Sang Heon Song
- Division of Nephrology, Department of Internal Medicine, Pusan National University Hospital, Busan, Republic of Korea
| | - Sung Joon Shin
- Division of Nephrology, Department of Internal Medicine, Dongguk University Ilsan Hospital, Goyang, Republic of Korea
| | - Yu Ah Hong
- Division of Nephrology, Department of Internal Medicine, Daejeon St. Mary's Hospital, Daejeon, Republic of Korea
| | - Won Min Hwang
- Division of Nephrology, Department of Internal Medicine, Konyang University Hospital, Daejeon, Republic of Korea.
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Wallin JM, Jacobson SH, Axelsson L, Lindberg J, Persson CI, Stenberg J, Wennman-Larsen A. Discrepancy in responses to the surprise question between hemodialysis nurses and physicians, with focus on patient clinical characteristics: A comparative study. Hemodial Int 2023; 27:454-464. [PMID: 37318069 DOI: 10.1111/hdi.13103] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2022] [Revised: 05/16/2023] [Accepted: 05/24/2023] [Indexed: 06/16/2023]
Abstract
INTRODUCTION The surprise question (SQ) "Would I be surprised if this patient died within the next xx months" can be used by different professions to foresee the need of serious illness conversations in patients approaching end of life. However, little is known about the different perspectives of nurses and physicians in responses to the SQ and factors influencing their appraisals. The aim was to explore nurses' and physicians' responses to the SQ regarding patients on hemodialysis, and to investigate how these answers were associated with patient clinical characteristics. METHODS This comparative cross-sectional study included 361 patients for whom 112 nurses and 15 physicians responded to the SQ regarding 6 and 12 months. Patient characteristics, performance status, and comorbidities were obtained. Cohen's kappa was used to analyze the interrater agreement between nurses and physicians in their responses to the SQ and multivariable logistic regression was applied to reveal the independent association to patient clinical characteristics. FINDINGS Proportions of nurses and physicians responding to the SQ with "no, not surprised" was similar regarding 6 and 12 months. However, there was a substantial difference concerning which specific patient the nurses and physicians responded "no, not surprised", within 6 (κ = 0.366, p < 0.001, 95% CI = 0.288-0.474) and 12 months (κ = 0.379, p < 0.001, 95% CI = 0.281-0.477). There were also differences in the patient clinical characteristics associated with nurses' and physicians' responses to the SQ. DISCUSSION Nurses and physicians have different perspectives in their appraisal when responding to the SQ for patients on hemodialysis. This may reinforce the need for communication and discussion between nurses and physicians to identify the need of serious illness conversations in patients approaching the end of life, in order to adapt hemodialysis care to patient preferences and needs.
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Affiliation(s)
- Jeanette M Wallin
- Department of Nursing Science, Sophiahemmet University, Stockholm, Sweden
| | - Stefan H Jacobson
- Division of Nephrology, Department of Clinical Sciences, Karolinska Institutet, Danderyd Hospital, Stockholm, Sweden
| | - Lena Axelsson
- Department of Nursing Science, Sophiahemmet University, Stockholm, Sweden
| | - Jenny Lindberg
- Department of Clinical Sciences, Unit of Medical Ethics, Lund University, Lund, Sweden
| | - Carina I Persson
- Department of Health and Caring Sciences, Linnaeus University, Kalmar, Sweden
| | - Jenny Stenberg
- Department of Medical Sciences, Uppsala University, Uppsala, Sweden
| | - Agneta Wennman-Larsen
- Department of Nursing Science, Sophiahemmet University, Stockholm, Sweden
- Department of Clinical Neuroscience, Karolinska Institutet, Stockholm, Sweden
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McCoy I, Hsu CY. Predicting Outcomes after Discharge from the Hospital on Dialysis. Clin J Am Soc Nephrol 2023; 18:834-836. [PMID: 37265219 PMCID: PMC10356110 DOI: 10.2215/cjn.0000000000000201] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Affiliation(s)
- Ian McCoy
- Division of Nephrology, School of Medicine, University of California, San Francisco, San Francisco, California
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van der Horst DEM, Engels N, Hendrikx J, van den Dorpel MA, Pieterse AH, Stiggelbout AM, van Uden-Kraan CF, Bos WJW. Predicting outcomes in chronic kidney disease: needs and preferences of patients and nephrologists. BMC Nephrol 2023; 24:66. [PMID: 36949427 PMCID: PMC10035227 DOI: 10.1186/s12882-023-03115-3] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2022] [Accepted: 03/10/2023] [Indexed: 03/24/2023] Open
Abstract
INTRODUCTION Guidelines on chronic kidney disease (CKD) recommend that nephrologists use clinical prediction models (CPMs). However, the actual use of CPMs seems limited in clinical practice. We conducted a national survey study to evaluate: 1) to what extent CPMs are used in Dutch CKD practice, 2) patients' and nephrologists' needs and preferences regarding predictions in CKD, and 3) determinants that may affect the adoption of CPMs in clinical practice. METHODS We conducted semi-structured interviews with CKD patients to inform the development of two online surveys; one for CKD patients and one for nephrologists. Survey participants were recruited through the Dutch Kidney Patient Association and the Dutch Federation of Nephrology. RESULTS A total of 126 patients and 50 nephrologists responded to the surveys. Most patients (89%) reported they had discussed predictions with their nephrologists. They most frequently discussed predictions regarded CKD progression: when they were expected to need kidney replacement therapy (KRT) (n = 81), and how rapidly their kidney function was expected to decline (n = 68). Half of the nephrologists (52%) reported to use CPMs in clinical practice, in particular CPMs predicting the risk of cardiovascular disease. Almost all nephrologists (98%) reported discussing expected CKD trajectories with their patients; even those that did not use CPMs (42%). The majority of patients (61%) and nephrologists (84%) chose a CPM predicting when patients would need KRT in the future as the most important prediction. However, a small portion of patients indicated they did not want to be informed on predictions regarding CKD progression at all (10-15%). Nephrologists not using CPMs (42%) reported they did not know CPMs they could use or felt that they had insufficient knowledge regarding CPMs. According to the nephrologists, the most important determinants for the adoption of CPMs in clinical practice were: 1) understandability for patients, 2) integration as standard of care, 3) the clinical relevance. CONCLUSION Even though the majority of patients in Dutch CKD practice reported discussing predictions with their nephrologists, CPMs are infrequently used for this purpose. Both patients and nephrologists considered a CPM predicting CKD progression most important to discuss. Increasing awareness about existing CPMs that predict CKD progression may result in increased adoption in clinical practice. When using CPMs regarding CKD progression, nephrologists should ask whether patients want to hear predictions beforehand, since individual patients' preferences vary.
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Affiliation(s)
- Dorinde E M van der Horst
- Santeon, Utrecht, The Netherlands.
- Department of Internal Medicine, Leiden University Medical Centre, Leiden, the Netherlands.
- Department of Internal Medicine, St. Antonius Hospital, Nieuwegein, the Netherlands.
| | - Noel Engels
- Santeon, Utrecht, The Netherlands
- Department of Internal Medicine, Leiden University Medical Centre, Leiden, the Netherlands
- Department of Internal Medicine, Maasstad Hospital, Rotterdam, the Netherlands
| | | | | | - Arwen H Pieterse
- Department of Biomedical Data Sciences, Leiden University Medical Centre, Leiden, The Netherlands
| | - Anne M Stiggelbout
- Department of Biomedical Data Sciences, Leiden University Medical Centre, Leiden, The Netherlands
- Erasmus School of Health Policy and Management, Erasmus University Rotterdam, Rotterdam, The Netherlands
| | | | - Willem Jan W Bos
- Santeon, Utrecht, The Netherlands
- Department of Internal Medicine, Leiden University Medical Centre, Leiden, the Netherlands
- Department of Internal Medicine, St. Antonius Hospital, Nieuwegein, the Netherlands
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Betiru EA, Mamo E, Jara Boneya D, Adem A, Abebaw D. Survival Analysis and Its Predictors Among Hemodialysis Patients at Saint Paul Hospital Millennium Medical College and Myungsung Christian Medical Center in Addis Ababa, Ethiopia, 2021. Int J Nephrol Renovasc Dis 2023; 16:59-71. [PMID: 36875008 PMCID: PMC9983441 DOI: 10.2147/ijnrd.s401022] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2022] [Accepted: 02/22/2023] [Indexed: 03/03/2023] Open
Abstract
Background Diabetes mellitus and hypertension are the most prominent conditions causing chronic kidney disease and eventually end-stage renal disease. Renal replacement therapy, particularly hemodialysis (HD), is the mainstay of treatment. The aim of this study is to assess the overall survival status of HD patients and potential survival predictors at Saint Paul hospital millennium medical college (SPHMMC) and Myungsung Christian Medical Center (MCM) in Addis Ababa, Ethiopia. Methods A retrospective cohort study was conducted on HD patients at SPHMMC and MCM general hospital from January 1, 2013 to December 30, 2020. Kaplan Meier, Log-rank, and Cox proportional regression models were used for the analysis. Estimated risks were reported as hazard ratios with 95% confidence intervals and P<0.05 was considered as having a significant association. Results A total of 128 patients were included in the study. Median survival time was 65 months. The predominant co-morbid condition was found to be diabetes mellitus with hypertension (42%). The total risk time for these patients was 143,617 person years. The overall incidence rate of death was 2.9 per 10,000 person years (95% CI=2.2-4). Patients who developed blood stream infection were 2.98-times more likely to die than those without infection. Those using an arteriovenous fistula were 66% less likely to die than those using a central venous catheter. Additionally, patients treated in a government-owned facility were 79% less likely to die. Conclusion The study identified that the median survival time of 65 months was comparable with developed nations. Significant predictors of death were found to be blood stream infection and type of vascular access. Government-owned treatment facilities showed better patient survival.
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Affiliation(s)
- Eyob Assefa Betiru
- General Public Health Department, Yekatit 12 Hospital Medical College, Addis Ababa, Ethiopia
| | - Ephrem Mamo
- Public Health Departments, Yekatit 12 Hospital Medical College, Addis Ababa, Ethiopia
| | - Dube Jara Boneya
- Departments of Public Health College of Health Sciences, Debre Markos University, Debre Markos, Ethiopia
| | - Abebawork Adem
- Departments of Public Health College of Health Sciences, Gambi Medical College, Addis Ababa, Ethiopia
| | - Dessie Abebaw
- Public Health Department of Reproductive Health's, Yekatit 12 Hospital Medical College, Addis Ababa, Ethiopia
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Siriwardana A, Gray NA, Makris A, Li CK, Yong K, Mehta Y, Ramos J, Di Tanna GL, Gianacas C, Addo IY, Roxburgh S, Naganathan V, Foote C, Gallagher M. Treatment decision-making and care among older adults with kidney failure: protocol for a multicentre, prospective observational cohort study with nested substudies and linked qualitative research (the Elderly Advanced CKD Programme). BMJ Open 2022; 12:e066156. [PMID: 36581411 PMCID: PMC9806093 DOI: 10.1136/bmjopen-2022-066156] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/28/2022] [Accepted: 12/12/2022] [Indexed: 12/30/2022] Open
Abstract
INTRODUCTION Shared treatment decision-making and planning of care are fundamental in advanced chronic kidney disease (CKD) management. There are limited data on several key outcomes for the elderly population including survival, quality of life, symptom burden, changes in physical functioning and experienced burden of healthcare. Patients, caregivers and clinicians consequently face significant uncertainty when making life-impacting treatment decisions. The Elderly Advanced CKD Programme includes quantitative and qualitative studies to better address challenges in treatment decision-making and planning of care among this increasingly prevalent elderly cohort. METHODS AND ANALYSIS The primary component is OUTcomes of Older patients with Kidney failure (OUTLOOK), a multicentre prospective observational cohort study that will enrol 800 patients ≥75 years with kidney failure (estimated glomerular filtration rate ≤15 mL/min/1.73 m2) across a minimum of six sites in Australia. Patients entered are in the decision-making phase or have recently made a decision on preferred treatment (dialysis, conservative kidney management or undecided). Patients will be prospectively followed until death or a maximum of 4 years, with the primary outcome being survival. Secondary outcomes are receipt of short-term acute dialysis, receipt of long-term maintenance dialysis, changes in biochemistry and end-of-life care characteristics. Data will be used to formulate a risk prediction tool applicable for use in the decision-making phase. The nested substudies Treatment modalities for the InfirM ElderLY with end stage kidney disease (TIMELY) and Caregivers of The InfirM ElderLY with end stage kidney disease (Co-TIMELY) will longitudinally assess quality of life, symptom burden and caregiver burden among 150 patients and 100 caregivers, respectively. CONsumer views of Treatment options for Elderly patieNts with kiDney failure (CONTEND) is an additional qualitative study that will enrol a minimum of 20 patients and 20 caregivers to explore experiences of treatment decision-making and care. ETHICS AND DISSEMINATION Ethics approval was obtained through Sydney Local Health District Human Research Ethics Committee (2019/ETH07718, 2020/ETH02226, 2021/ETH01020, 2019/ETH07783). OUTLOOK is approved to have waiver of individual patient consent. TIMELY, Co-TIMELY and CONTEND participants will provide written informed consent. Final results will be disseminated through peer-reviewed journals and presented at scientific meetings.
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Affiliation(s)
- Amanda Siriwardana
- Renal and Metabolic Division, The George Institute for Global Health, Sydney, New South Wales, Australia
- Sydney Medical School, The University of Sydney, Sydney, New South Wales, Australia
| | - Nicholas A Gray
- Department of Renal Medicine, Sunshine Coast Hospital and Health Service, Birtinya, Queensland, Australia
- School of Health and Behavioural Science, University of the Sunshine Coast, Sippy Downs, Queensland, Australia
| | - Angela Makris
- Department of Renal Medicine, Liverpool Hospital, Sydney, New South Wales, Australia
- Faculty of Medicine, University of New South Wales, Sydney, New South Wales, Australia
| | - Chenlei Kelly Li
- Department of Renal Medicine, St George Hospital, Sydney, New South Wales, Australia
| | - Kenneth Yong
- Department of Renal Medicine, Prince of Wales Hospital and Community Health Services, Sydney, New South Wales, Australia
- Prince of Wales Clinical School, University of New South Wales, Sydney, New South Wales, Australia
| | - Yachna Mehta
- Renal and Metabolic Division, The George Institute for Global Health, Sydney, New South Wales, Australia
| | - Jannel Ramos
- Renal and Metabolic Division, The George Institute for Global Health, Sydney, New South Wales, Australia
| | - Gian Luca Di Tanna
- Statistics Division, George Institute for Global Health, Sydney, New South Wales, Australia
| | - Chris Gianacas
- Statistics Division, George Institute for Global Health, Sydney, New South Wales, Australia
| | - Isaac Yeboah Addo
- Faculty of Arts and Social Sciences, University of New South Wales Centre for Social Research in Health, Sydney, New South Wales, Australia
| | - Sarah Roxburgh
- Sydney Medical School, The University of Sydney, Sydney, New South Wales, Australia
- Department of Renal Medicine, Royal North Shore Hospital, Sydney, New South Wales, Australia
| | - Vasi Naganathan
- Sydney Medical School, The University of Sydney, Sydney, New South Wales, Australia
- Department of Geriatric Medicine, Concord Repatriation General Hospital, The University of Sydney Centre for Education and Research on Ageing, Sydney, New South Wales, Australia
| | - Celine Foote
- Department of Renal Medicine, Concord Repatriation General Hospital, Sydney, New South Wales, Australia
| | - Martin Gallagher
- Renal and Metabolic Division, The George Institute for Global Health, Sydney, New South Wales, Australia
- Department of Renal Medicine, Liverpool Hospital, Sydney, New South Wales, Australia
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11
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Zhang A, Qi L, Zhang Y, Ren Z, Zhao C, Wang Q, Ren K, Bai J, Cao N. Development of a prediction model to estimate the 5-year risk of cardiovascular events and all-cause mortality in haemodialysis patients: a retrospective study. PeerJ 2022; 10:e14316. [PMID: 36389426 PMCID: PMC9653067 DOI: 10.7717/peerj.14316] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2022] [Accepted: 10/07/2022] [Indexed: 11/10/2022] Open
Abstract
Background Cardiovascular disease (CVD) is a major cause of mortality in patients on haemodialysis. The development of a prediction model for CVD risk is necessary to help make clinical decisions for haemodialysis patients. This retrospective study aimed to develop a prediction model for the 5-year risk of CV events and all-cause mortality in haemodialysis patients in China. Methods We retrospectively enrolled 398 haemodialysis patients who underwent dialysis at the dialysis facility of the General Hospital of Northern Theater Command in June 2016 and were followed up for 5 years. The composite outcome was defined as CV events and/or all-cause death. Multivariable logistic regression with backwards stepwise selection was used to develop our new prediction model. Results Seven predictors were included in the final model: age, male sex, diabetes, history of CV events, no arteriovenous fistula at dialysis initiation, a monocyte/lymphocyte ratio greater than 0.43 and a serum uric acid level less than 436 mmol/L. Discrimination and calibration were satisfactory, with a C-statistic above 0.80. The predictors lay nearly on the 45-degree line for agreement with the outcome in the calibration plot. A simple clinical score was constructed to provide the probability of 5-year CV events or all-cause mortality. Bootstrapping validation showed that the new model also has similar discrimination and calibration. Compared with the Framingham risk score (FRS) and a similar model, our model showed better performance. Conclusion This prognostic model can be used to predict the long-term risk of CV events and all-cause mortality in haemodialysis patients. An MLR greater than 0.43 is an important prognostic factor.
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Affiliation(s)
- Aihong Zhang
- Department of Blood Purification, General Hospital of Northern Theater Command, Shenyang, Liaoning, China,Department of Nephrology, Xi’an People’s Hospital (Xi’an Fourth Hospital), Xi’an, China,Postgraduate College, Dalian Medical University, Dalian, Liaoning, China
| | - Lemuge Qi
- Department of Blood Purification, General Hospital of Northern Theater Command, Shenyang, Liaoning, China,Postgraduate College, China Medical University, Shenyang, Liaoning, China
| | - Yanping Zhang
- Department of Blood Purification, General Hospital of Northern Theater Command, Shenyang, Liaoning, China
| | - Zhuo Ren
- Department of Blood Purification, General Hospital of Northern Theater Command, Shenyang, Liaoning, China
| | - Chen Zhao
- Department of Blood Purification, General Hospital of Northern Theater Command, Shenyang, Liaoning, China
| | - Qian Wang
- Department of Blood Purification, General Hospital of Northern Theater Command, Shenyang, Liaoning, China
| | - Kaiming Ren
- Department of Blood Purification, General Hospital of Northern Theater Command, Shenyang, Liaoning, China
| | - Jiuxu Bai
- Department of Blood Purification, General Hospital of Northern Theater Command, Shenyang, Liaoning, China
| | - Ning Cao
- Department of Blood Purification, General Hospital of Northern Theater Command, Shenyang, Liaoning, China
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Rankin S, Han L, Scherzer R, Tenney S, Keating M, Genberg K, Rahn M, Wilkins K, Shlipak M, Estrella M. A Machine Learning Model for Predicting Mortality within 90 Days of Dialysis Initiation. KIDNEY360 2022; 3:1556-1565. [PMID: 36245665 PMCID: PMC9528387 DOI: 10.34067/kid.0007012021] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/02/2021] [Accepted: 07/15/2022] [Indexed: 11/27/2022]
Abstract
Background The first 90 days after dialysis initiation are associated with high morbidity and mortality in end-stage kidney disease (ESKD) patients. A machine learning-based tool for predicting mortality could inform patient-clinician shared decision making on whether to initiate dialysis or pursue medical management. We used the eXtreme Gradient Boosting (XGBoost) algorithm to predict mortality in the first 90 days after dialysis initiation in a nationally representative population from the United States Renal Data System. Methods A cohort of adults initiating dialysis between 2008-2017 were studied for outcome of death within 90 days of dialysis initiation. The study dataset included 188 candidate predictors prognostic of early mortality that were known on or before the first day of dialysis and was partitioned into training (70%) and testing (30%) subsets. XGBoost modeling used a complete-case set and a dataset obtained from multiple imputation. Model performance was evaluated by c-statistics overall and stratified by subgroups of age, sex, race, and dialysis modality. Results The analysis included 1,150,195 patients with ESKD, of whom 86,083 (8%) died in the first 90 days after dialysis initiation. The XGBoost models discriminated mortality risk in the nonimputed (c=0.826, 95% CI, 0.823 to 0.828) and imputed (c=0.827, 95% CI, 0.823 to 0.827) models and performed well across nearly every subgroup (race, age, sex, and dialysis modality) evaluated (c>0.75). Across predicted risk thresholds of 10%-50%, higher risk thresholds showed declining sensitivity (0.69-0.04) with improving specificity (0.79-0.99); similarly, positive likelihood ratio was highest at the 40% threshold, whereas the negative likelihood ratio was lowest at the 10% threshold. After calibration using isotonic regression, the model accurately estimated the probability of mortality across all ranges of predicted risk. Conclusions The XGBoost-based model developed in this study discriminated risk of early mortality after dialysis initiation with excellent calibration and performed well across key subgroups.
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Affiliation(s)
| | - Lucy Han
- Booz Allen Hamilton, McLean, Virginia
| | - Rebecca Scherzer
- Kidney Health Research Collaborative (KHRC), University of California San Francisco (UCSF), San Francisco, California
| | | | | | | | - Matthew Rahn
- Office of the National Coordinator for Health Information Technology (ONC), Washington, DC
| | - Kenneth Wilkins
- National Institute of Diabetes and Digestive and Kidney Diseases (NIDDK), Bethesda, Maryland
| | - Michael Shlipak
- Kidney Health Research Collaborative (KHRC), University of California San Francisco (UCSF), San Francisco, California
| | - Michelle Estrella
- Kidney Health Research Collaborative (KHRC), University of California San Francisco (UCSF), San Francisco, California
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13
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Engels N, de Graav GN, van der Nat P, van den Dorpel M, Stiggelbout AM, Bos WJ. Shared decision-making in advanced kidney disease: a scoping review. BMJ Open 2022; 12:e055248. [PMID: 36130746 PMCID: PMC9494569 DOI: 10.1136/bmjopen-2021-055248] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/09/2021] [Accepted: 05/31/2022] [Indexed: 11/25/2022] Open
Abstract
OBJECTIVES To provide a comprehensive overview of interventions that support shared decision-making (SDM) for treatment modality decisions in advanced kidney disease (AKD). To provide summarised information on their content, use and reported results. To provide an overview of interventions currently under development or investigation. DESIGN The JBI methodology for scoping reviews was followed. This review conforms to the Preferred Reporting Items for Systematic Reviews and Meta-Analyses Extension for Scoping Reviews (PRISMA-ScR) checklist. DATA SOURCES MEDLINE, Embase, Web of Science, Cochrane Library, Emcare, PsycINFO, PROSPERO and Academic Search Premier for peer-reviewed literature. Other online databases (eg, clinicaltrials.gov, OpenGrey) for grey literature. ELIGIBILITY FOR INCLUSION Records in English with a study population of patients >18 years of age with an estimated glomerular filtration rate <30 mL/min/1.73 m2. Records had to be on the subject of SDM, or explicitly mention that the intervention reported on could be used to support SDM for treatment modality decisions in AKD. DATA EXTRACTION AND SYNTHESIS Two reviewers independently screened and selected records for data extraction. Interventions were categorised as prognostic tools (PTs), educational programmes (EPs), patient decision aids (PtDAs) or multicomponent initiatives (MIs). Interventions were subsequently categorised based on the decisions they were developed to support. RESULTS One hundred forty-five interventions were identified in a total of 158 included records: 52 PTs, 51 EPs, 29 PtDAs and 13 MIs. Sixteen (n=16, 11%) were novel interventions currently under investigation. Forty-six (n=46, 35.7%) were reported to have been implemented in clinical practice. Sixty-seven (n=67, 51.9%) were evaluated for their effects on outcomes in the intended users. CONCLUSION There is no conclusive evidence on which intervention is the most efficacious in supporting SDM for treatment modality decisions in AKD. There is a lot of variation in selected outcomes, and the body of evidence is largely based on observational research. In addition, the effects of these interventions on SDM are under-reported.
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Affiliation(s)
- Noel Engels
- Department of Shared Decision-Making and Value-Based Health Care, Santeon, Utrecht, The Netherlands
- Internal Medicine, Leiden University Medical Center, Leiden, The Netherlands
- Internal Medicine, Maasstad Hospital, Rotterdam, the Netherlands
| | | | - Paul van der Nat
- Department of Value-Based Health Care, Sint Antonius Hospital, Nieuwegein, The Netherlands
| | | | - Anne M Stiggelbout
- Department of Biomedical Data Sciences, Leiden University Medical Center, Leiden, The Netherlands
| | - Willem Jan Bos
- Internal Medicine, Leiden University Medical Center, Leiden, The Netherlands
- Department of Value-Based Health Care, Sint Antonius Hospital, Nieuwegein, The Netherlands
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Campbell-Montalvo R, Jia H, Shukla AM. Supporting Shared Decision-Making and Home Dialysis in End-Stage Kidney Disease. Int J Nephrol Renovasc Dis 2022; 15:229-237. [PMID: 36105650 PMCID: PMC9467687 DOI: 10.2147/ijnrd.s375347] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2022] [Accepted: 08/30/2022] [Indexed: 01/16/2023] Open
Abstract
It has been widely demonstrated that patient education and empowerment, especially involving shared treatment decisions, improve patient outcomes in chronic medical conditions, including chronic kidney disease requiring kidney replacement therapies. Accordingly, regulatory agencies in the US and worldwide recommend shared decision-making for finalizing one's choice of kidney replacement therapy. It is also recognized that the US needs to substantially increase home dialysis utilization to leverage its positive impacts on patient and healthcare cost-related outcomes. This perspective highlights how the routine clinical use of the recommended practice of shared decision-making can exist in synergy with the system's goal for increased home dialysis use. It introduces a pragmatic provider checklist, The Nephrologist's Shared Decision-Making Checklist, grounded in the relevant theories of shared decision-making, and, unlike some research assessments and extant tools, is easy to understand and implement in clinical practice. This qualitative Checklist can help providers ensure that they have co-constructed an SDM experience with the patient and involved caretakers, helping them benefit from the improved outcomes associated with SDM.
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Affiliation(s)
- Rebecca Campbell-Montalvo
- Department of Curriculum and Instruction, Neag School of Education, University of Connecticut, Storrs, CT, USA
- Department of Medicine, North Florida/South Georgia Veteran Healthcare System, Gainesville, FL, USA
| | - Huanguang Jia
- Department of Medicine, North Florida/South Georgia Veteran Healthcare System, Gainesville, FL, USA
| | - Ashutosh M Shukla
- Department of Medicine, North Florida/South Georgia Veteran Healthcare System, Gainesville, FL, USA
- Division of Nephrology, Hypertension and Transplantation, Department of Medicine, University of Florida, Gainesville, FL, USA
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Dhiman P, Ma J, Andaur Navarro CL, Speich B, Bullock G, Damen JAA, Hooft L, Kirtley S, Riley RD, Van Calster B, Moons KGM, Collins GS. Risk of bias of prognostic models developed using machine learning: a systematic review in oncology. Diagn Progn Res 2022; 6:13. [PMID: 35794668 PMCID: PMC9261114 DOI: 10.1186/s41512-022-00126-w] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/15/2021] [Accepted: 02/07/2022] [Indexed: 12/13/2022] Open
Abstract
BACKGROUND Prognostic models are used widely in the oncology domain to guide medical decision-making. Little is known about the risk of bias of prognostic models developed using machine learning and the barriers to their clinical uptake in the oncology domain. METHODS We conducted a systematic review and searched MEDLINE and EMBASE databases for oncology-related studies developing a prognostic model using machine learning methods published between 01/01/2019 and 05/09/2019. The primary outcome was risk of bias, judged using the Prediction model Risk Of Bias ASsessment Tool (PROBAST). We described risk of bias overall and for each domain, by development and validation analyses separately. RESULTS We included 62 publications (48 development-only; 14 development with validation). 152 models were developed across all publications and 37 models were validated. 84% (95% CI: 77 to 89) of developed models and 51% (95% CI: 35 to 67) of validated models were at overall high risk of bias. Bias introduced in the analysis was the largest contributor to the overall risk of bias judgement for model development and validation. 123 (81%, 95% CI: 73.8 to 86.4) developed models and 19 (51%, 95% CI: 35.1 to 67.3) validated models were at high risk of bias due to their analysis, mostly due to shortcomings in the analysis including insufficient sample size and split-sample internal validation. CONCLUSIONS The quality of machine learning based prognostic models in the oncology domain is poor and most models have a high risk of bias, contraindicating their use in clinical practice. Adherence to better standards is urgently needed, with a focus on sample size estimation and analysis methods, to improve the quality of these models.
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Affiliation(s)
- Paula Dhiman
- Centre for Statistics in Medicine, Nuffield Department of Orthopaedics, Rheumatology and Musculoskeletal Sciences, University of Oxford, Oxford, OX3 7LD, UK.
- NIHR Oxford Biomedical Research Centre, Oxford University Hospitals NHS Foundation Trust, Oxford, UK.
| | - Jie Ma
- Centre for Statistics in Medicine, Nuffield Department of Orthopaedics, Rheumatology and Musculoskeletal Sciences, University of Oxford, Oxford, OX3 7LD, UK
| | - Constanza L Andaur Navarro
- Julius Center for Health Sciences and Primary Care, University Medical Center Utrecht, Utrecht University, Utrecht, The Netherlands
- Cochrane Netherlands, University Medical Center Utrecht, Utrecht University, Utrecht, The Netherlands
| | - Benjamin Speich
- Centre for Statistics in Medicine, Nuffield Department of Orthopaedics, Rheumatology and Musculoskeletal Sciences, University of Oxford, Oxford, OX3 7LD, UK
- Department of Clinical Research, Basel Institute for Clinical Epidemiology and Biostatistics, University Hospital Basel, University of Basel, Basel, Switzerland
| | - Garrett Bullock
- Nuffield Department of Orthopaedics, Rheumatology, and Musculoskeletal Sciences, University of Oxford, Oxford, UK
| | - Johanna A A Damen
- Julius Center for Health Sciences and Primary Care, University Medical Center Utrecht, Utrecht University, Utrecht, The Netherlands
- Cochrane Netherlands, University Medical Center Utrecht, Utrecht University, Utrecht, The Netherlands
| | - Lotty Hooft
- Julius Center for Health Sciences and Primary Care, University Medical Center Utrecht, Utrecht University, Utrecht, The Netherlands
- Cochrane Netherlands, University Medical Center Utrecht, Utrecht University, Utrecht, The Netherlands
| | - Shona Kirtley
- Centre for Statistics in Medicine, Nuffield Department of Orthopaedics, Rheumatology and Musculoskeletal Sciences, University of Oxford, Oxford, OX3 7LD, UK
| | - Richard D Riley
- Centre for Prognosis Research, School of Medicine, Keele University, Staffordshire, ST5 5BG, UK
| | - Ben Van Calster
- Department of Development and Regeneration, KU Leuven, Louvain, Belgium
- Department of Biomedical Data Sciences, Leiden University Medical Center, Leiden, the Netherlands
- EPI-Centre, KU Leuven, Louvain, Belgium
| | - Karel G M Moons
- Julius Center for Health Sciences and Primary Care, University Medical Center Utrecht, Utrecht University, Utrecht, The Netherlands
- Cochrane Netherlands, University Medical Center Utrecht, Utrecht University, Utrecht, The Netherlands
| | - Gary S Collins
- Centre for Statistics in Medicine, Nuffield Department of Orthopaedics, Rheumatology and Musculoskeletal Sciences, University of Oxford, Oxford, OX3 7LD, UK
- NIHR Oxford Biomedical Research Centre, Oxford University Hospitals NHS Foundation Trust, Oxford, UK
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Li G, Jiang L, Li J, Shen H, Jiang S, Ouyang H, Song K. Development and validation of a nomogram for predicting the 6-months survival rate of patients undergoing incident hemodialysis in China. BMC Nephrol 2022; 23:234. [PMID: 35778681 PMCID: PMC9248113 DOI: 10.1186/s12882-022-02864-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2021] [Accepted: 06/07/2022] [Indexed: 11/12/2022] Open
Abstract
Background The all-cause mortality of patients undergoing hemodialysis (HD) is higher than in the general population. The first 6 months after dialysis are important for new patients. The aim of this study was to develop and validate a nomogram for predicting the 6-month survival rate of HD patients. Methods A prediction model was constructed using a training cohort of 679 HD patients. Multivariate Cox regression analyses were performed to identify predictive factors. The identified factors were used to establish a nomogram. The performance of the nomogram was assessed using the C-index and calibration plots. The nomogram was validated by performing discrimination and calibration tests on an additional cohort of 173 HD patients. Results During a follow-up period of six months, 47 and 16 deaths occurred in the training cohort and validation cohort, respectively, representing a mortality rate of 7.3% and 9.2%, respectively. The nomogram comprised five commonly available predictors: age, temporary dialysis catheter, intradialytic hypotension, use of ACEi or ARB, and use of loop diuretics. The nomogram showed good discrimination in the training cohort [C-index 0.775(0.693–0.857)] and validation cohort [C-index 0.758(0.677–0.836)], as well as good calibration, indicating that the performance of the nomogram was good. The total score point was then divided into two risk classifications: low risk (0–90 points) and high risk (≥ 91 points). Further analysis showed that all-cause mortality was significantly different between the high-risk group and the low-risk group. Conclusions The constructed nomogram accurately predicted the 6-month survival rate of HD patients, and thus it can be used in clinical decision-making.
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Affiliation(s)
- Guode Li
- Department of Cardiology, Maoming People's Hospital, Maoming, Guangdong, China
| | - Linsen Jiang
- Department of Nephrology, The Second Affiliated Hospital of Soochow University, 1055San-Xiang Road, Suzhou, 215004, Jiangsu Province, China
| | - Jiangpeng Li
- Department of Nephrology, The Second Affiliated Hospital of Soochow University, 1055San-Xiang Road, Suzhou, 215004, Jiangsu Province, China
| | - Huaying Shen
- Department of Nephrology, The Second Affiliated Hospital of Soochow University, 1055San-Xiang Road, Suzhou, 215004, Jiangsu Province, China
| | - Shan Jiang
- Department of Nephrology, The Second Affiliated Hospital of Soochow University, 1055San-Xiang Road, Suzhou, 215004, Jiangsu Province, China.
| | - Han Ouyang
- Department of Nephrology, The Second Affiliated Hospital of Soochow University, 1055San-Xiang Road, Suzhou, 215004, Jiangsu Province, China.
| | - Kai Song
- Department of Nephrology, The Second Affiliated Hospital of Soochow University, 1055San-Xiang Road, Suzhou, 215004, Jiangsu Province, China.
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Dhiman P, Ma J, Andaur Navarro CL, Speich B, Bullock G, Damen JAA, Hooft L, Kirtley S, Riley RD, Van Calster B, Moons KGM, Collins GS. Methodological conduct of prognostic prediction models developed using machine learning in oncology: a systematic review. BMC Med Res Methodol 2022; 22:101. [PMID: 35395724 PMCID: PMC8991704 DOI: 10.1186/s12874-022-01577-x] [Citation(s) in RCA: 34] [Impact Index Per Article: 17.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2021] [Accepted: 03/18/2022] [Indexed: 12/13/2022] Open
Abstract
BACKGROUND Describe and evaluate the methodological conduct of prognostic prediction models developed using machine learning methods in oncology. METHODS We conducted a systematic review in MEDLINE and Embase between 01/01/2019 and 05/09/2019, for studies developing a prognostic prediction model using machine learning methods in oncology. We used the Transparent Reporting of a multivariable prediction model for Individual Prognosis Or Diagnosis (TRIPOD) statement, Prediction model Risk Of Bias ASsessment Tool (PROBAST) and CHecklist for critical Appraisal and data extraction for systematic Reviews of prediction Modelling Studies (CHARMS) to assess the methodological conduct of included publications. Results were summarised by modelling type: regression-, non-regression-based and ensemble machine learning models. RESULTS Sixty-two publications met inclusion criteria developing 152 models across all publications. Forty-two models were regression-based, 71 were non-regression-based and 39 were ensemble models. A median of 647 individuals (IQR: 203 to 4059) and 195 events (IQR: 38 to 1269) were used for model development, and 553 individuals (IQR: 69 to 3069) and 50 events (IQR: 17.5 to 326.5) for model validation. A higher number of events per predictor was used for developing regression-based models (median: 8, IQR: 7.1 to 23.5), compared to alternative machine learning (median: 3.4, IQR: 1.1 to 19.1) and ensemble models (median: 1.7, IQR: 1.1 to 6). Sample size was rarely justified (n = 5/62; 8%). Some or all continuous predictors were categorised before modelling in 24 studies (39%). 46% (n = 24/62) of models reporting predictor selection before modelling used univariable analyses, and common method across all modelling types. Ten out of 24 models for time-to-event outcomes accounted for censoring (42%). A split sample approach was the most popular method for internal validation (n = 25/62, 40%). Calibration was reported in 11 studies. Less than half of models were reported or made available. CONCLUSIONS The methodological conduct of machine learning based clinical prediction models is poor. Guidance is urgently needed, with increased awareness and education of minimum prediction modelling standards. Particular focus is needed on sample size estimation, development and validation analysis methods, and ensuring the model is available for independent validation, to improve quality of machine learning based clinical prediction models.
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Affiliation(s)
- Paula Dhiman
- Centre for Statistics in Medicine, Nuffield Department of Orthopaedics, Rheumatology and Musculoskeletal Sciences, University of Oxford, Oxford, OX3 7LD, UK.
- NIHR Oxford Biomedical Research Centre, Oxford University Hospitals NHS Foundation Trust, Oxford, UK.
| | - Jie Ma
- Centre for Statistics in Medicine, Nuffield Department of Orthopaedics, Rheumatology and Musculoskeletal Sciences, University of Oxford, Oxford, OX3 7LD, UK
| | - Constanza L Andaur Navarro
- Julius Center for Health Sciences and Primary Care, University Medical Center Utrecht, Utrecht University, Utrecht, The Netherlands
- Cochrane Netherlands, University Medical Center Utrecht, Utrecht University, Utrecht, The Netherlands
| | - Benjamin Speich
- Centre for Statistics in Medicine, Nuffield Department of Orthopaedics, Rheumatology and Musculoskeletal Sciences, University of Oxford, Oxford, OX3 7LD, UK
- Basel Institute for Clinical Epidemiology and Biostatistics, Department of Clinical Research, University Hospital Basel, University of Basel, Basel, Switzerland
| | - Garrett Bullock
- Nuffield Department of Orthopaedics, Rheumatology, and Musculoskeletal Sciences, University of Oxford, Oxford, UK
| | - Johanna A A Damen
- Julius Center for Health Sciences and Primary Care, University Medical Center Utrecht, Utrecht University, Utrecht, The Netherlands
- Cochrane Netherlands, University Medical Center Utrecht, Utrecht University, Utrecht, The Netherlands
| | - Lotty Hooft
- Julius Center for Health Sciences and Primary Care, University Medical Center Utrecht, Utrecht University, Utrecht, The Netherlands
- Cochrane Netherlands, University Medical Center Utrecht, Utrecht University, Utrecht, The Netherlands
| | - Shona Kirtley
- Centre for Statistics in Medicine, Nuffield Department of Orthopaedics, Rheumatology and Musculoskeletal Sciences, University of Oxford, Oxford, OX3 7LD, UK
| | - Richard D Riley
- Centre for Prognosis Research, School of Medicine, Keele University, Staffordshire, ST5 5BG, UK
| | - Ben Van Calster
- Department of Development and Regeneration, KU Leuven, Leuven, Belgium
- Department of Biomedical Data Sciences, Leiden University Medical Center, Leiden, the Netherlands
- EPI-centre, KU Leuven, Leuven, Belgium
| | - Karel G M Moons
- Julius Center for Health Sciences and Primary Care, University Medical Center Utrecht, Utrecht University, Utrecht, The Netherlands
- Cochrane Netherlands, University Medical Center Utrecht, Utrecht University, Utrecht, The Netherlands
| | - Gary S Collins
- Centre for Statistics in Medicine, Nuffield Department of Orthopaedics, Rheumatology and Musculoskeletal Sciences, University of Oxford, Oxford, OX3 7LD, UK
- NIHR Oxford Biomedical Research Centre, Oxford University Hospitals NHS Foundation Trust, Oxford, UK
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18
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Lu E, Chai E. Kidney Supportive Care in Peritoneal Dialysis: Developing a Person-Centered Kidney Disease Care Plan. Kidney Med 2021; 4:100392. [PMID: 35243304 PMCID: PMC8861952 DOI: 10.1016/j.xkme.2021.10.005] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023] Open
Abstract
Individuals receiving peritoneal dialysis (PD)—similar to those receiving hemodialysis —may experience high mortality coupled with a high symptom burden and reduced health-related quality of life. In this context, a discussion of the risks, benefits, and tradeoffs of PD and/or other kidney treatment modalities should be explored based on individual goals and preferences. Through these principles, kidney supportive care provides a person-centered approach to kidney disease care throughout the spectrum of kidney failure and earlier stages of chronic kidney disease. Kidney supportive care is offered in conjunction with life-prolonging therapies, including dialysis and kidney transplants, and is increasingly recognized as an integral part of advancing the care of PD patients. Using “My Kidney Care Roadmap” for shared decision making, kidney supportive care guides patients undergoing PD and their clinicians to (1) elicit patient goals, values, and priorities; (2) convey medical prognosis and suitable treatment options; and (3) ask “Which of these kidney treatment options will best help me achieve my goals and priorities?” to inform both current and future decisions, including choice of dialysis modalities, time-limited trials, and/or nondialysis management. Recognizing that patient priorities and choices may evolve, this framework ultimately allows patients to continually reassess their PD care to better achieve goal-directed dialysis.
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Affiliation(s)
- Emily Lu
- Division of Nephrology, Icahn School of Medicine at Mount Sinai, New York, NY
- Brookdale Department of Geriatrics and Palliative Medicine, Icahn School of Medicine at Mount Sinai, New York, NY
- Address for Correspondence: Emily Lu, MD, Icahn School of Medicine at Mount Sinai, One Gustave L. Levy Place, Box 1243, New York, NY 10029.
| | - Emily Chai
- Division of Nephrology, Icahn School of Medicine at Mount Sinai, New York, NY
- Brookdale Department of Geriatrics and Palliative Medicine, Icahn School of Medicine at Mount Sinai, New York, NY
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19
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Nierenersatzverfahren bei Hochbetagten. DER NEPHROLOGE 2021; 16:261-268. [PMID: 34405030 PMCID: PMC8361401 DOI: 10.1007/s11560-021-00518-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Accepted: 07/12/2021] [Indexed: 11/03/2022]
Abstract
Hochbetagte haben an der Hämodialyse eine 1‑Jahres-Mortalität, die im Zusammenhang mit Komorbiditäten und einem Katheter als Dialysezugang 30 % übersteigt. Metaanalysen zeigen aber, dass frühzeitige Vorbereitung und individuelle Verfahrensauswahl die Morbidität und Mortalität auch im hohen Lebensalter entscheidend bessern. Mit zunehmendem Alter und Gebrechlichkeit verschieben sich dabei die Behandlungsziele weg von der Verlängerung der Lebensdauer auf die Verbesserung der Lebensqualität. Damit kann die Präferenz von Heimdialyseverfahren, auch als assistierte Peritonealdialyse, ebenso Bedeutung erringen wie die fachnephrologische Behandlung ohne Nierenersatzverfahren mit palliativem Therapieziel. Im höheren Lebensalter bestimmen zunehmend Komorbiditäten, kognitive Einschränkungen, Gebrechlichkeit und die Gesamtprognose das sinnvolle Vorgehen. Bereits bei der Anlage von Gefäßzugängen ergeben sich hinsichtlich Anastomosenort und Anlagezeitpunkt bei Hochbetagten andere Entscheidungskriterien. Empfehlungen zu Dialysedauer und -frequenz folgen der Lebensqualität mit inkrementellen und am Ende des Lebens auch dekrementellen Therapieregimen. Die demographische Entwicklung stellt die Nephrologie mit einer Zunahme älterer Patienten vor besondere Herausforderungen. Frühzeitige Aufklärung über alle Nierenersatzverfahren und die Festlegung individueller Therapieziele können bei sorgfältiger Auswahl von Dialysemodalität und -intensität auch bei Hochbetagten entscheidend zur Verbesserung der Prognose und insbesondere der Lebensqualität beitragen.
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20
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Saeed F, Shah AY, Allen RJ, Epstein RM, Fiscella KA. Communication principles and practices for making shared decisions about renal replacement therapy: a review of the literature. Curr Opin Nephrol Hypertens 2021; 30:507-515. [PMID: 34148978 PMCID: PMC8373782 DOI: 10.1097/mnh.0000000000000731] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
PURPOSE OF REVIEW To provide an overview of the skill set required for communication and person-centered decision making for renal replacement therapy (RRT) choices, especially conservative kidney management (CKM). RECENT FINDINGS Research on communication and decision-making skills for shared RRT decision making is still in infancy. We adapt literature from other fields such as primary care and oncology for effective RRT decision making. SUMMARY We review seven key skills: (1) Announcing the need for decision making (2) Agenda Setting (3) Educating patients about RRT options (4) Discussing prognoses (5) Eliciting patient preferences (6) Responding to emotions and showing empathy, and (7) Investing in the end. We also provide example sentences to frame the conversations around RRT choices including CKM.
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Affiliation(s)
- Fahad Saeed
- Departments of Medicine and Public Health, Division of Nephrology
- Division of Palliative Care
- University of Rochester School of Medicine, National University of Medical Sciences
| | - Amna Yousaf Shah
- Rawalpindi, Pakistan; CITE Center, Department of Behavioral and Natural Sciences
| | | | - Ronald M Epstein
- Division of Palliative Care
- Department of Family Medicine and Center for Center for Communication and Disparities Research, University of Rochester School of Medicine and Dentistry, Rochester, New York, USA
| | - Kevin A Fiscella
- Department of Family Medicine and Center for Center for Communication and Disparities Research, University of Rochester School of Medicine and Dentistry, Rochester, New York, USA
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21
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Yamada G, Hayakawa K, Matsunaga N, Terada M, Suzuki S, Asai Y, Ohtsu H, Toyoda A, Kitajima K, Tsuzuki S, Saito S, Ohmagari N. Predicting respiratory failure for COVID-19 patients in Japan: a simple clinical score for evaluating the need for hospitalisation. Epidemiol Infect 2021; 149:e175. [PMID: 36043382 PMCID: PMC8365048 DOI: 10.1017/s0950268821001837] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022] Open
Abstract
Predicting the need for hospitalisation of patients with coronavirus disease 2019 (COVID-19) is important for preventing healthcare disruptions. This observational study aimed to use the COVID-19 Registry Japan (COVIREGI-JP) to develop a simple scoring system to predict respiratory failure due to COVID-19 using only underlying diseases and symptoms. A total of 6873 patients with COVID-19 admitted to Japanese medical institutions between 1 June 2020 and 2 December 2020 were included and divided into derivation and validation cohorts according to the date of admission. We used multivariable logistic regression analysis to create a simple risk score model, with respiratory failure as the outcome for young (18-39 years), middle-aged (40-64 years) and older (≥65 years) groups, using sex, age, body mass index, medical history and symptoms. The models selected for each age group were quite different. Areas under the receiver operating characteristic curves for the simple risk score model were 0.87, 0.79 and 0.80 for young, middle-aged and elderly derivation cohorts, and 0.81, 0.80 and 0.67 in the validation cohorts. Calibration of the model was good. The simple scoring system may be useful in the appropriate allocation of medical resources during the COVID-19 pandemic.
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Affiliation(s)
- Gen Yamada
- Disease Control and Prevention Center, National Center for Global Health and Medicine, Tokyo, Japan
- Author for correspondence: Gen Yamada, E-mail:
| | - Kayoko Hayakawa
- Disease Control and Prevention Center, National Center for Global Health and Medicine, Tokyo, Japan
- AMR Clinical Reference Center, National Center for Global Health and Medicine, Tokyo, Japan
| | - Nobuaki Matsunaga
- AMR Clinical Reference Center, National Center for Global Health and Medicine, Tokyo, Japan
| | - Mari Terada
- Disease Control and Prevention Center, National Center for Global Health and Medicine, Tokyo, Japan
- Center for Clinical Sciences, National Center for Global Health and Medicine, Tokyo, Japan
| | - Setsuko Suzuki
- Disease Control and Prevention Center, National Center for Global Health and Medicine, Tokyo, Japan
| | - Yusuke Asai
- AMR Clinical Reference Center, National Center for Global Health and Medicine, Tokyo, Japan
| | - Hiroshi Ohtsu
- Center for Clinical Sciences, National Center for Global Health and Medicine, Tokyo, Japan
| | - Ako Toyoda
- Center for Clinical Sciences, National Center for Global Health and Medicine, Tokyo, Japan
| | - Koji Kitajima
- Center for Clinical Sciences, National Center for Global Health and Medicine, Tokyo, Japan
| | - Shinya Tsuzuki
- AMR Clinical Reference Center, National Center for Global Health and Medicine, Tokyo, Japan
- Faculty of Medicine and Health Sciences, University of Antwerp, Antwerp, Belgium
| | - Sho Saito
- Disease Control and Prevention Center, National Center for Global Health and Medicine, Tokyo, Japan
| | - Norio Ohmagari
- Disease Control and Prevention Center, National Center for Global Health and Medicine, Tokyo, Japan
- AMR Clinical Reference Center, National Center for Global Health and Medicine, Tokyo, Japan
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22
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Novais T, Pongan E, Gervais F, Coste MH, Morelon E, Krolak-Salmon P, Vernaudon J. Pretransplant Comprehensive Geriatric Assessment in Older Patients with Advanced Chronic Kidney Disease. Nephron Clin Pract 2021; 145:692-701. [PMID: 34261074 DOI: 10.1159/000517342] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2020] [Accepted: 05/13/2021] [Indexed: 11/19/2022] Open
Abstract
BACKGROUND In older patients with advanced chronic kidney disease (CKD), the decision of kidney transplantation (KT) is a challenge for nephrologists. The use of comprehensive geriatric assessment (CGA) is increasingly gaining interest into the process of decision-making about treatment modality choice for CKD. The aim of this study was to assess the prevalence of geriatric impairment and frailty in older dialysis and nondialysis patients with advanced CKD using a pretransplant CGA model and to identify geriatric impairments influencing the geriatricians' recommendations for KT. METHODS An observational study was conducted with retrospective data from July 2017 to January 2020. Patients aged ≥65 years with advanced CKD, treated or not with dialysis, and referred by the nephrologist were included in the study. The CGA assessed comorbidity burden, cognition, mood, nutritional status, (instrumental) activities of daily living, physical function, frailty, and polypharmacy. Geriatric impairments influencing the geriatricians' recommendations for KT were identified using univariate and multivariate logistic regressions. RESULTS 156 patients were included (74.2 ± 3.5 years and 62.2% on dialysis). Geriatric conditions were highly prevalent in both dialysis and nondialysis groups. The rate of geriatric impairments was higher in dialysis patients regarding comorbidity burden, symptoms of depression, physical function, autonomy, and frailty. Geriatrician's recommendations for KT were as follows: favorable (79.5%) versus not favorable or multidisciplinary discussion needed with nephrologists (20.5%). Dependence for Instrumental Activities of Daily Living (IADL) (odds ratio [OR] = 3.01 and 95% confidence interval [CI] = 1.30-7.31), physical functions (OR = 2.91 and 95% CI = 1.08-7.87), and frailty (OR = 2.66 and 95% CI = 1.07-6.65) were found to be independent geriatric impairments influencing geriatrician's recommendations for KT. CONCLUSIONS Understanding the burden of geriatric impairment provides an opportunity to direct KT decision-making and to guide interventions to prevent functional decline and preserve quality of life.
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Affiliation(s)
- Teddy Novais
- Pharmaceutical Unit, Lyon Institute for Elderly, Charpennes Hospital, University Hospital of Lyon, Lyon, France.,EA-7425 HESPER, Health Services and Performance Research, University Lyon, Lyon, France.,Claude Bernard Lyon 1 University, University Lyon 1, Lyon, France
| | - Elodie Pongan
- Day-Care Unit, Lyon Institute for Elderly, Charpennes Hospital, University Hospital of Lyon, Lyon, France
| | - Frederic Gervais
- Pharmaceutical Unit, Lyon Institute for Elderly, Charpennes Hospital, University Hospital of Lyon, Lyon, France
| | - Marie-Hélène Coste
- Day-Care Unit, Lyon Institute for Elderly, Charpennes Hospital, University Hospital of Lyon, Lyon, France.,Clinical and Research Memory Centre of Lyon, Lyon Institute for Elderly, Charpennes Hospital, University Hospital of Lyon, Lyon, France
| | - Emmanuel Morelon
- Nephrology, Transplantation and Clinical Immunology Department, RTRS « Centaure », Edouard Herriot Hospital, University Hospital of Lyon, Lyon, France
| | - Pierre Krolak-Salmon
- Day-Care Unit, Lyon Institute for Elderly, Charpennes Hospital, University Hospital of Lyon, Lyon, France.,Clinical and Research Memory Centre of Lyon, Lyon Institute for Elderly, Charpennes Hospital, University Hospital of Lyon, Lyon, France.,INSERM U1028, CNRS UMR5292, Lyon Neuroscience Research Center, Brain Dynamics and Cognition Team, Lyon, France
| | - Julien Vernaudon
- Day-Care Unit, Lyon Institute for Elderly, Charpennes Hospital, University Hospital of Lyon, Lyon, France.,Clinical and Research Memory Centre of Lyon, Lyon Institute for Elderly, Charpennes Hospital, University Hospital of Lyon, Lyon, France
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23
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Huang X, Yi C, Wu M, Qiu Y, Wu H, Ye H, Peng Y, Xiao X, Lin J, Yu X, Yang X. Risk Factors and Clinical Outcomes of Cognitive Impairment in Diabetic Patients Undergoing Peritoneal Dialysis. Kidney Blood Press Res 2021; 46:531-540. [PMID: 34229326 DOI: 10.1159/000514172] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2020] [Accepted: 01/03/2021] [Indexed: 11/19/2022] Open
Abstract
INTRODUCTION Cognitive impairment (CI) is common in patients with CKD or diabetes mellitus (DM). However, the relevance between DM and CI in diabetic patients undergoing peritoneal dialysis (PD) has not been clearly established. This study aimed to explore the role of DM in CI, the association of glycemic control with CI, and clinical outcomes of CI in diabetic PD patients. METHODS Continuous ambulatory PD (CAPD) patients followed up in our PD center between 2014 and 2016 were enrolled. The participants were followed until an endpoint was reached or December 2017. Demographic data and clinical characteristics were collected, and laboratory parameters were measured. The Montreal Cognitive Assessment (MoCA) was used to evaluate global cognitive function, and a score of <26 was considered to indicate CI. A propensity score matching according to age, gender, and mean arterial pressure was conducted between the DM and non-DM groups. RESULTS A total of 913 CAPD patients were enrolled, of whom 186 (20.4%) had diabetes. After appropriate matching, 175 patients in the DM group and 270 patients in the non-DM group were included. Patients with diabetes had a higher prevalence of CI and lower scores for visuospatial/executive function, naming, language, delayed recall, and orientation. Higher HbA1c (odds ratio [OR], 1.547; 95% confidence interval [95% CI], 1.013-2.362) and cardiovascular disease (CVD; OR, 2.926; 95% CI, 1.139-7.516) significantly correlated with a risk of CI in diabetic patients. During a median of 26.0 (interquartile range 13.5-35.6) months of follow-up, diabetic patients with CI demonstrated a significantly lower survival rate than those without CI, and CI was an independent risk factor for mortality after adjustment (hazard ratio, 7.224; 95% CI, 1.694-30.806). However, they did not show worse technique survival or higher peritonitis rate than patients without CI. CONCLUSIONS HbA1c and CVD are independent risk factors for CI in diabetic patients undergoing CAPD, and CI is independently associated with a higher risk of mortality.
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Affiliation(s)
- Xuan Huang
- Department of Nephrology, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, China.,Key Laboratory of Nephrology, National Health Commission and Guangdong Province, Guangzhou, China
| | - Chunyan Yi
- Department of Nephrology, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, China.,Key Laboratory of Nephrology, National Health Commission and Guangdong Province, Guangzhou, China
| | - Meiju Wu
- Department of Nephrology, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, China.,Key Laboratory of Nephrology, National Health Commission and Guangdong Province, Guangzhou, China
| | - Yagui Qiu
- Department of Nephrology, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, China.,Key Laboratory of Nephrology, National Health Commission and Guangdong Province, Guangzhou, China
| | - Haishan Wu
- Department of Nephrology, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, China.,Key Laboratory of Nephrology, National Health Commission and Guangdong Province, Guangzhou, China
| | - Hongjian Ye
- Department of Nephrology, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, China.,Key Laboratory of Nephrology, National Health Commission and Guangdong Province, Guangzhou, China
| | - Yuan Peng
- Department of Nephrology, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, China.,Key Laboratory of Nephrology, National Health Commission and Guangdong Province, Guangzhou, China
| | - Xi Xiao
- Department of Nephrology, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, China.,Key Laboratory of Nephrology, National Health Commission and Guangdong Province, Guangzhou, China
| | - Jianxiong Lin
- Department of Nephrology, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, China.,Key Laboratory of Nephrology, National Health Commission and Guangdong Province, Guangzhou, China
| | - Xuqing Yu
- Department of Nephrology, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, China.,Key Laboratory of Nephrology, National Health Commission and Guangdong Province, Guangzhou, China
| | - Xiao Yang
- Department of Nephrology, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, China.,Key Laboratory of Nephrology, National Health Commission and Guangdong Province, Guangzhou, China
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24
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Pan S, Zhao DL, Li P, Sun XF, Zhou JH, Song KK, Wang Y, Miao LN, Ni ZH, Lin HL, Liu FY, Li Y, He YN, Wang NS, Wang CL, Zhang AH, Chen MH, Yang XP, Deng YY, Shao FM, Fu SX, Fang JA, Cai GY, Chen XM. Relationships among the Dosage of Erythropoiesis-Stimulating Agents, Erythropoietin Resistance Index, and Mortality in Maintenance Hemodialysis Patients. Blood Purif 2021; 51:171-181. [PMID: 34175850 DOI: 10.1159/000506536] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2019] [Accepted: 02/13/2020] [Indexed: 11/19/2022]
Abstract
BACKGROUND Erythropoiesis-stimulating agents (ESAs) constitute an important treatment option for anemia in hemodialysis (HD) patients. We investigated the relationships among the dosage of ESA, erythropoietin resistance index (ERI) scores, and mortality in Chinese MHD patients. METHODS This multicenter observational retrospective study included MHD patients from 16 blood purification centers (n = 824) who underwent HD in 2011-2015 and were followed up until December 31, 2016. We collected demographic variables, HD parameters, laboratory values, and ESA dosages. Patients were grouped into quartiles according to ESA dosage to study the effect of ESA dosage on all-cause mortality. The ERI was calculated as follows: ESA (IU/week)/weight (kg)/hemoglobin levels (g/dL). We also compared outcomes among the patients stratified into quartiles according to ERI scores. We used the Cox proportional hazards model to measure the relationships between the ESA dosage, ERI scores, and all-cause mortality. Using propensity score matching, we compared mortality between groups according to ERI scores, classified as either > or ≤12.80. RESULTS In total, 824 patients were enrolled in the study; 200 (24.3%) all-cause deaths occurred within the observation period. Kaplan-Meier analyses showed that patients administered high dosages of ESAs had significantly worse survival than those administered low dosages of ESAs. A multivariate Cox regression identified that high dosages of ESAs could significantly predict mortality (ESA dosage >10,000.0 IU/week, HR = 1.59, 95% confidence intervals (CIs) (1.04, 2.42), and p = 0.031). Our analysis also indicated a significant increase in the risk of mortality in patients with high ERI scores. Propensity score matching-analyses confirmed that ERI > 12.80 could significantly predict mortality (HR = 1.56, 95% CI [1.11, 2.18], and p = 0.010). CONCLUSIONS Our data suggested that ESA dosages >10,000.0 IU/week in the first 3 months constitute an independent predictor of all-cause mortality among Chinese MHD patients. A higher degree of resistance to ESA was related to a higher risk of all-cause mortality.
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Affiliation(s)
- Sai Pan
- The PLA Medical College, Department of Nephrology, Chinese PLA General Hospital, Chinese PLA Institute of Nephrology, State Key Laboratory of Kidney Diseases, National Clinical Research Center for Kidney Diseases, Beijing, China
| | - De-Long Zhao
- The PLA Medical College, Department of Nephrology, Chinese PLA General Hospital, Chinese PLA Institute of Nephrology, State Key Laboratory of Kidney Diseases, National Clinical Research Center for Kidney Diseases, Beijing, China
| | - Ping Li
- The PLA Medical College, Department of Nephrology, Chinese PLA General Hospital, Chinese PLA Institute of Nephrology, State Key Laboratory of Kidney Diseases, National Clinical Research Center for Kidney Diseases, Beijing, China
| | - Xue-Feng Sun
- The PLA Medical College, Department of Nephrology, Chinese PLA General Hospital, Chinese PLA Institute of Nephrology, State Key Laboratory of Kidney Diseases, National Clinical Research Center for Kidney Diseases, Beijing, China
| | - Jian-Hui Zhou
- The PLA Medical College, Department of Nephrology, Chinese PLA General Hospital, Chinese PLA Institute of Nephrology, State Key Laboratory of Kidney Diseases, National Clinical Research Center for Kidney Diseases, Beijing, China
| | - Kang-Kang Song
- The PLA Medical College, Department of Nephrology, Chinese PLA General Hospital, Chinese PLA Institute of Nephrology, State Key Laboratory of Kidney Diseases, National Clinical Research Center for Kidney Diseases, Beijing, China
| | - Yong Wang
- The PLA Medical College, Department of Nephrology, Chinese PLA General Hospital, Chinese PLA Institute of Nephrology, State Key Laboratory of Kidney Diseases, National Clinical Research Center for Kidney Diseases, Beijing, China
| | - Li-Ning Miao
- Department of Nephrology, The Second Hospital of Jilin University, Changchun, China
| | - Zhao-Hui Ni
- Department of Nephrology, Renji Hospital, Shanghai Peritoneal Dialysis Research Center, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Hong-Li Lin
- Department of Nephrology, First Affiliated Hospital of Dalian Medical University, Dalian, China
| | - Fu-You Liu
- Department of Nephrology, The Second Xiangya Hospital of Central South University, Changsha, China
| | - Ying Li
- Department of Nephrology, Third Hospital of Hebei Medical University, Kidney Disease Research Center of Hebei Province, Shijiazhuang, China
| | - Ya Ni He
- Department of Nephrology, Institute of Surgery Research, Daping Hospital, Third Military Medical University, Chongqing, China
| | - Nian-Song Wang
- Department of Nephrology, Affiliated The Sixth People's Hospital, Shanghai Jiao Tong University, Shanghai, China
| | - Cai-Li Wang
- Department of Nephrology, First Affiliated Hospital of Baotou Medical College, Baotou, China
| | - Ai-Hua Zhang
- Department of Nephrology, Peking University Third Hospital, Beijing, China
| | - Meng-Hua Chen
- Department of Nephrology, General Hospital of Ningxia Medical University, Yinchuan, China
| | - Xiao-Ping Yang
- Department of Nephrology, The First Affiliated Hospital of Shihezi University School of Medicine, Shihezi, China
| | - Yue-Yi Deng
- Department of Nephrology, Longhua Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai, China
| | - Feng-Min Shao
- Department of Nephrology, Henan Provincial People's Hospital, Zhengzhou, China
| | - Shu-Xia Fu
- Department of Nephrology, The Second Hospital of Hebei Medical University, Shijiazhuang, China
| | - Jing-Ai Fang
- Department of Nephrology, First Hospital of Shanxi Medical University, Taiyuan, China
| | - Guang-Yan Cai
- The PLA Medical College, Department of Nephrology, Chinese PLA General Hospital, Chinese PLA Institute of Nephrology, State Key Laboratory of Kidney Diseases, National Clinical Research Center for Kidney Diseases, Beijing, China
| | - Xiang-Mei Chen
- The PLA Medical College, Department of Nephrology, Chinese PLA General Hospital, Chinese PLA Institute of Nephrology, State Key Laboratory of Kidney Diseases, National Clinical Research Center for Kidney Diseases, Beijing, China
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25
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Werfel S, Lorenz G, Haller B, Günthner R, Matschkal J, Braunisch MC, Schaller C, Gundel P, Kemmner S, Hayek SS, Nusshag C, Reiser J, Moog P, Heemann U, Schmaderer C. Application of regularized regression to identify novel predictors of mortality in a cohort of hemodialysis patients. Sci Rep 2021; 11:9287. [PMID: 33927289 PMCID: PMC8085040 DOI: 10.1038/s41598-021-88655-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2020] [Accepted: 04/09/2021] [Indexed: 02/02/2023] Open
Abstract
Cohort studies often provide a large array of data on study participants. The techniques of statistical learning can allow an efficient way to analyze large datasets in order to uncover previously unknown, clinically relevant predictors of morbidity or mortality. We applied a combination of elastic net penalized Cox regression and stability selection with the aim of identifying novel predictors of mortality in a cohort of prevalent hemodialysis patients. In our analysis we included 475 patients from the "rISk strAtification in end-stage Renal disease" (ISAR) study, who we split into derivation and confirmation cohorts. A wide array of examinations was available for study participants, resulting in over a hundred potential predictors. In the selection approach many of the well established predictors were retrieved in the derivation cohort. Additionally, the serum levels of IL-12p70 and AST were selected as mortality predictors and confirmed in the withheld subgroup. High IL-12p70 levels were specifically prognostic of infection-related mortality. In summary, we demonstrate an approach how statistical learning can be applied to a cohort study to derive novel hypotheses in a data-driven way. Our results suggest a novel role of IL-12p70 in infection-related mortality, while AST is a promising additional biomarker in patients undergoing hemodialysis.
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Affiliation(s)
- Stanislas Werfel
- grid.6936.a0000000123222966Department of Nephrology, Klinikum rechts der Isar, Technical University Munich, Ismaninger Str. 22, 81675 Munich, Germany
| | - Georg Lorenz
- grid.6936.a0000000123222966Department of Nephrology, Klinikum rechts der Isar, Technical University Munich, Ismaninger Str. 22, 81675 Munich, Germany
| | - Bernhard Haller
- grid.6936.a0000000123222966Institute of Medical Informatics, Statistics and Epidemiology, Technical University Munich, Munich, Germany
| | - Roman Günthner
- grid.6936.a0000000123222966Department of Nephrology, Klinikum rechts der Isar, Technical University Munich, Ismaninger Str. 22, 81675 Munich, Germany
| | - Julia Matschkal
- grid.6936.a0000000123222966Department of Nephrology, Klinikum rechts der Isar, Technical University Munich, Ismaninger Str. 22, 81675 Munich, Germany
| | - Matthias C. Braunisch
- grid.6936.a0000000123222966Department of Nephrology, Klinikum rechts der Isar, Technical University Munich, Ismaninger Str. 22, 81675 Munich, Germany
| | - Carolin Schaller
- grid.6936.a0000000123222966Department of Nephrology, Klinikum rechts der Isar, Technical University Munich, Ismaninger Str. 22, 81675 Munich, Germany
| | - Peter Gundel
- grid.6936.a0000000123222966Department of Nephrology, Klinikum rechts der Isar, Technical University Munich, Ismaninger Str. 22, 81675 Munich, Germany
| | - Stephan Kemmner
- grid.6936.a0000000123222966Department of Nephrology, Klinikum rechts der Isar, Technical University Munich, Ismaninger Str. 22, 81675 Munich, Germany ,grid.5252.00000 0004 1936 973XTransplant Center, University Hospital Munich, Ludwig-Maximilians-University (LMU), Munich, Germany
| | - Salim S. Hayek
- grid.214458.e0000000086837370Division of Cardiology, Department of Medicine, University of Michigan, Ann Arbor, MI USA
| | - Christian Nusshag
- grid.240684.c0000 0001 0705 3621Department of Medicine, Rush University Medical Center, Chicago, IL USA ,grid.5253.10000 0001 0328 4908Departement of Nephrology, University Hospital Heidelberg, Heidelberg, Germany
| | - Jochen Reiser
- grid.240684.c0000 0001 0705 3621Department of Medicine, Rush University Medical Center, Chicago, IL USA
| | - Philipp Moog
- grid.6936.a0000000123222966Department of Nephrology, Klinikum rechts der Isar, Technical University Munich, Ismaninger Str. 22, 81675 Munich, Germany
| | - Uwe Heemann
- grid.6936.a0000000123222966Department of Nephrology, Klinikum rechts der Isar, Technical University Munich, Ismaninger Str. 22, 81675 Munich, Germany
| | - Christoph Schmaderer
- grid.6936.a0000000123222966Department of Nephrology, Klinikum rechts der Isar, Technical University Munich, Ismaninger Str. 22, 81675 Munich, Germany
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Helve J, Kramer A, Abad Diez JM, Aresté-Fosalba N, Arici M, Cases A, Collart F, Heaf J, De Meester J, Nordio M, Palsson R, Pobes A, Rydell H, Reisæter AV, Massy ZA, Jager KJ, Finne P. Effect of comorbidities on survival in patients >80 years of age at onset of renal replacement therapy: data from the ERA-EDTA Registry. Nephrol Dial Transplant 2021; 36:688-694. [PMID: 33537775 DOI: 10.1093/ndt/gfaa278] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2020] [Accepted: 09/15/2020] [Indexed: 02/02/2023] Open
Abstract
BACKGROUND The number of elderly patients on renal replacement therapy (RRT) is increasing. The survival and quality of life of these patients may be lower if they have multiple comorbidities at the onset of RRT. The aim of this study was to explore whether the effect of comorbidities on survival is similar in elderly RRT patients compared with younger ones. METHODS Included were 9333 patients ≥80 years of age and 48 352 patients 20-79 years of age starting RRT between 2010 and 2015 from 15 national or regional registries submitting data to the European Renal Association-European Dialysis and Transplantation Association Registry. Patients were followed until death or the end of 2016. Survival was assessed by Kaplan-Meier curves and the relative risk of death associated with comorbidities was assessed by Cox regression analysis. RESULTS Patients ≥80 years of age had a greater comorbidity burden than younger patients. However, relative risks of death associated with all studied comorbidities (diabetes, ischaemic heart disease, chronic heart failure, cerebrovascular disease, peripheral vascular disease and malignancy) were significantly lower in elderly patients compared with younger patients. Also, the increase in absolute mortality rates associated with an increasing number of comorbidities was smaller in elderly patients. CONCLUSIONS Comorbidities are common in elderly patients who enter RRT, but the risk of death associated with comorbidities is less than in younger patients. This should be taken into account when assessing the prognosis of elderly RRT patients.
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Affiliation(s)
- Jaakko Helve
- Finnish Registry for Kidney Diseases, Helsinki, Finland.,Abdominal Center Nephrology, University of Helsinki, Helsinki University Hospital, Helsinki, Finland
| | - Anneke Kramer
- Department of Medical Informatics, ERA-EDTA Registry, Academic Medical Center, University of Amsterdam, Amsterdam Public Health Research Institute, Amsterdam, The Netherlands
| | | | - Nuria Aresté-Fosalba
- Department of Nephrology, University Hospital Virgen Macarena, Seville, Spain.,Information System of the Autonomic Transplant Coordination of Andalucía (SICATA), Andalucía, Spain
| | - Mustafa Arici
- Department of Nephrology, Faculty of Medicine, Hacettepe University, Ankara, Turkey
| | - Aleix Cases
- Department of Nephrology, Hospital Clinic, Universitat de Barcelona, IDIBAPS, Barcelona, Spain.,Registre de Malalts Renals de Catalunya, Barcelona, Spain
| | | | - James Heaf
- Department of Medicine, Zealand University Hospital, Roskilde, Denmark
| | - Johan De Meester
- Department of Nephrology, Dialysis and Hypertension, Dutch-speaking Belgian Renal Registry (NBVN), Sint-Niklaas, Belgium
| | - Maurizio Nordio
- Veneto Dialysis and Transplantation Registry, Regional Epidemiology System, Padua, Italy.,Nephrology Dialysis Unit, Padua, Italy
| | - Runolfur Palsson
- Division of Nephrology, Landspitali-The National University Hospital of Iceland, Reykjavik, Iceland.,Faculty of Medicine, School of Health Sciences, University of Iceland, Reykjavik, Iceland
| | - Alfonso Pobes
- Area Gestation Clinica Nefrología VII-VIII Asturias, Spain
| | - Helena Rydell
- Department of Clinical Sciences Intervention and Technology, Karolinska Institutet, Huddinge, Sweden.,Department of Internal Medicine, Swedish Renal Registry, Ryhoy County Hospital, Jönköping, Sweden
| | - Anna Varberg Reisæter
- Department of Transplantation Medicine, Oslo University Hospital, Rikshospitalet, Oslo, Norway
| | - Ziad A Massy
- Division of Nephrology, Amboise Paré University Hospital, APHP, Boulogne-Billancourt, Paris, France.,Institut National de la Santé et de la Recherche Médicale (INSERM) Unit 1018 team5, Research Centre in Epidemiology and Population Health (CESP), University of Paris Ouest-Versailles-St Quentin-en-Yveline, Villejuif, France
| | - Kitty J Jager
- Department of Medical Informatics, ERA-EDTA Registry, Academic Medical Center, University of Amsterdam, Amsterdam Public Health Research Institute, Amsterdam, The Netherlands
| | - Patrik Finne
- Finnish Registry for Kidney Diseases, Helsinki, Finland.,Abdominal Center Nephrology, University of Helsinki, Helsinki University Hospital, Helsinki, Finland
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van der Borg WE, Verdonk P, de Jong-Camerik J, Abma TA. How to relate to dialysis patients' fatigue - perspectives of dialysis nurses and renal health professionals: A qualitative study. Int J Nurs Stud 2021; 117:103884. [PMID: 33631400 DOI: 10.1016/j.ijnurstu.2021.103884] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2020] [Revised: 01/14/2021] [Accepted: 01/16/2021] [Indexed: 12/16/2022]
Abstract
BACKGROUND Although fatigue among the dialysis population is known as a severe and debilitating health problem, this symptom is often under recognized and undertreated. OBJECTIVE This qualitative study aimed to gain a better understanding of how dialysis nurses and renal health professionals perceive and address dialysis patient's fatigue in renal care practice. DESIGN We conducted a qualitative descriptive study to explore how nurses and renal health professionals perceive and address dialysis patients' fatigue in their daily health care practices. A constructivist grounded theory approach guided analysis and conceptualisation of findings. SETTING(S) This study took place at 13 academic and regional settings across the Netherlands. The study was approved by the Medical Ethics Committee (2015.049), on behalf of VU University medical center in Amsterdam. PARTICIPANTS Twenty-one renal health professionals of various disciplines took part in interviews: ten dialysis nurses, four nephrologists, two physician assistants, five medical social workers. METHODS Semi-structured interviews were conducted in order to gain in-depth insight into the perspectives of dialysis nurses and renal health professionals. An inductive thematic analysis provided insight into health professionals' stances toward dialysis patients' fatigue in light of their daily care context and practices. RESULTS Two main themes emerged; 1) 'Fatigue in the background': Shows there is strong focus on medical-technical aspects of the disease. All health professionals perceive fatigue as an intangible symptom that is difficult to address, and falls outside their scope of responsibility and competence. Communication about fatigue among professionals and with patients is limited, pushing fatigue further into the background. 2) 'Vulnerabilities in the background': Especially nurses and social workers signal the accumulating vulnerabilities of dialysis patients and associate these with fatigue (old age, multimorbidities, financial and social problems). Although the need for psychological support is acknowledged, multiple vulnerabilities increase the complexity and intensity of care, and further strengthens the medical-technical focus of care and treatment. CONCLUSIONS There is a need to enable renal health professionals to communicate about the complex nature of fatigue in renal patients and stimulate interdisciplinary exchange and shared responsibility. Dialysis nurses have frequent contact with patients during dialysis treatment and are the first to notice when patients' fatigue increases and their overall condition deteriorates. They can play an important role to go beyond the technological imperative of care and understand the lived experiences of patients within their social contexts.
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Affiliation(s)
- Wieke E van der Borg
- Amsterdam UMC, location VUmc, Department of Ethics, Law and Humanities, Amsterdam, the Netherlands.
| | - Petra Verdonk
- Amsterdam UMC, location VUmc, Department of Ethics, Law and Humanities, Amsterdam, the Netherlands
| | - Judith de Jong-Camerik
- Amsterdam UMC, location VUmc, Department of Ethics, Law and Humanities, Amsterdam, the Netherlands
| | - Tineke A Abma
- Amsterdam UMC, location VUmc, Department of Ethics, Law and Humanities, Amsterdam, the Netherlands
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Thorsteinsdottir B, Hickson LJ, Giblon R, Pajouhi A, Connell N, Branda M, Vasdev AK, McCoy RG, Zand L, Tangri N, Shah ND. Validation of prognostic indices for short term mortality in an incident dialysis population of older adults >75. PLoS One 2021; 16:e0244081. [PMID: 33471808 PMCID: PMC7816982 DOI: 10.1371/journal.pone.0244081] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2020] [Accepted: 12/03/2020] [Indexed: 11/29/2022] Open
Abstract
Rational and objective Prognosis provides critical knowledge for shared decision making between patients and clinicians. While several prognostic indices for mortality in dialysis patients have been developed, their performance among elderly patients initiating dialysis is unknown, despite great need for reliable prognostication in that context. To assess the performance of 6 previously validated prognostic indices to predict 3 and/or 6 months mortality in a cohort of elderly incident dialysis patients. Study design Validation study of prognostic indices using retrospective cohort data. Indices were compared using the concordance (“c”)-statistic, i.e. area under the receiver operating characteristic curve (ROC). Calibration, sensitivity, specificity, positive and negative predictive values were also calculated. Setting & participants Incident elderly (age ≥75 years; n = 349) dialysis patients at a tertiary referral center. Established predictors Variables for six validated prognostic indices for short term (3 and 6 month) mortality prediction (Foley, NCI, REIN, updated REIN, Thamer, and Wick) were extracted from the electronic medical record. The indices were individually applied as per each index specifications to predict 3- and/or 6-month mortality. Results In our cohort of 349 patients, mean age was 81.5±4.4 years, 66% were male, and median survival was 351 days. The c-statistic for the risk prediction indices ranged from 0.57 to 0.73. Wick ROC 0.73 (0.68, 0.78) and Foley 0.67 (0.61, 0.73) indices performed best. The Foley index was weakly calibrated with poor overall model fit (p <0.01) and overestimated mortality risk, while the Wick index was relatively well-calibrated but underestimated mortality risk. Limitations Small sample size, use of secondary data, need for imputation, homogeneous population. Conclusion Most predictive indices for mortality performed moderately in our incident dialysis population. The Wick and Foley indices were the best performing, but had issues with under and over calibration. More accurate indices for predicting survival in older patients with kidney failure are needed.
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Affiliation(s)
- Bjorg Thorsteinsdottir
- Division of Community Internal Medicine, Department of Medicine, Mayo Clinic, Rochester, Minnesota, United States of America
- Biomedical Ethics Program, Mayo Clinic, Rochester, Minnesota, United States of America
- Knowledge Evaluation Research Unit, Mayo Clinic, Rochester, Minnesota, United States of America
- Kern Center for the Science of Health Care Delivery, Mayo Clinic, Rochester, Minnesota, United States of America
- * E-mail:
| | - LaTonya J. Hickson
- Kern Center for the Science of Health Care Delivery, Mayo Clinic, Rochester, Minnesota, United States of America
- Division of Nephrology and Hypertension, Department of Medicine, Mayo Clinic, Rochester, Minnesota, United States of America
| | - Rachel Giblon
- Knowledge Evaluation Research Unit, Mayo Clinic, Rochester, Minnesota, United States of America
- Division of Health Care Sciences Research, Mayo Clinic, Rochester, Minnesota, United States of America
| | - Atieh Pajouhi
- Division of Community Internal Medicine, Department of Medicine, Mayo Clinic, Rochester, Minnesota, United States of America
| | - Natalie Connell
- Biomedical Ethics Program, Mayo Clinic, Rochester, Minnesota, United States of America
| | - Megan Branda
- Knowledge Evaluation Research Unit, Mayo Clinic, Rochester, Minnesota, United States of America
- Department of Biostatistics and Informatics, Colorado School of Public Health, University of Colorado-Denver Anschutz Medical Campus, Aurora, CO, United States of America
| | - Amrit K. Vasdev
- Division of Community Internal Medicine, Department of Medicine, Mayo Clinic, Rochester, Minnesota, United States of America
| | - Rozalina G. McCoy
- Division of Community Internal Medicine, Department of Medicine, Mayo Clinic, Rochester, Minnesota, United States of America
- Kern Center for the Science of Health Care Delivery, Mayo Clinic, Rochester, Minnesota, United States of America
| | - Ladan Zand
- Division of Nephrology and Hypertension, Department of Medicine, Mayo Clinic, Rochester, Minnesota, United States of America
| | - Navdeep Tangri
- Department of Medicine, Seven Oaks General Hospital, University of Manitoba, Winnipeg, Canada
- Department of Community Health Sciences, Seven Oaks General Hospital, University of Manitoba, Winnipeg, Canada
| | - Nilay D. Shah
- Knowledge Evaluation Research Unit, Mayo Clinic, Rochester, Minnesota, United States of America
- Division of Health Care Sciences Research, Mayo Clinic, Rochester, Minnesota, United States of America
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Temporal bone carcinoma: testing the prognostic value of a novel clinical and histological scoring system. Eur Arch Otorhinolaryngol 2020; 278:4179-4186. [PMID: 33231758 DOI: 10.1007/s00405-020-06489-4] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2020] [Accepted: 11/10/2020] [Indexed: 10/22/2022]
Abstract
PURPOSE Our group recently proposed the novel Padova prognostic scoring system for temporal bone carcinoma (TBSCC) that considers: the revised Pittsburgh staging system; radiological dura mater involvement; non-anterior spread (medial, inferior or posterior into the temporal bone and skull base) of T4 tumors; and histological grade. The aim of the present study was to validate this prognostic TBSCC scoring system in a case series selected from the literature. METHODS A search was run to identify studies on TBSCC reporting the variables included in our score for each patient. Then our system was applied to the data extracted. RESULTS Only two published investigations reported all the clinical and pathological data required for our scoring system. In one series from the Gruppo Otologico in Piacenza (Italy), a significantly higher recurrence rate (p = 0.008), shorter disease-free survival (DFS) (p = 0.001), higher disease-specific mortality (DSM) (p = 0.006), and shorter disease-specific survival (DSS) (p = 0.004) were associated with scores ≥ 5. Receiver operating curve (ROC) analysis showed an AUC of 0.804 for TBSCC recurrence, and 0.832 for DSM. In a series from Kyushu University Hospital (Japan), a significantly higher DSM (p = 0.018) and shorter DSS (p = 0.021) were associated with scores ≥ 5. ROC analysis showed an AUC of 0.812 for tumor relapse and 0.790 for DSM. CONCLUSION Our TBSCC Padova scoring system confirmed its validity when applied to the only two international TBSCC series providing the required data. These preliminary results need to be confirmed in a multi-center prospective setting.
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Einbinder Y, Shnaider A, Ghanayem K, Basok A, Rogachev B, Lior Y, Haviv YS, Cohen-Hagai K, Nacasch N, Rozenberg I, Benchetrit S, Zitman-Gal T, Douvdevani A. Elevated Circulating Cell-Free DNA in Hemodialysis-Treated Patients Is Associated with Increased Mortality. Am J Nephrol 2020; 51:852-860. [PMID: 33105130 DOI: 10.1159/000510771] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2020] [Accepted: 08/06/2020] [Indexed: 12/23/2022]
Abstract
BACKGROUND Predicting the mortality risk of patients un-dergoing hemodialysis (HD) is challenging. Cell-free DNA (cfDNA) is released into circulation from dying cells, and its elevation is predictive of unfavorable outcome. In a pilot study, we found post-HD cfDNA level to be a predictor of all-cause mortality. Thus, the aim of this study was to confirm the prognostic power of cfDNA in a larger prospective cohort study conducted at 2 medical centers. METHODS CfDNA levels were measured by a rapid fluorometric assay on sera obtained before and after 1 HD session. One hundred fifty-three patients were followed up to 46 months for mortality during which time 47 patients died. We compared the predictive value of cfDNA to age, comorbidities, and standard blood tests. RESULTS Examining standard blood tests, only post-HD cfDNA levels were elevated in the non-survivor group compared to survivors (959 vs. 803 ng/mL, p = 0.04). Pre- and post-HD cfDNA levels correlated with age and diabetes. Patients with elevated cfDNA (>850 ng/mL) showed lower survival than those with normal levels. A Cox proportional hazard regression model demonstrated a significant hazard ratio of 1.92 for post-HD cfDNA levels. Logistic regression models showed that post-HD cfDNA was a significant predictor of mortality at 1-3 years with odd ratios of 4.61, 4.36, and 6.22, respectively. CONCLUSIONS Post-HD cfDNA level was superior to standard blood tests and could serve as a biomarker to assist in decision-making for HD-treated patients.
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Affiliation(s)
- Yael Einbinder
- Department of Nephrology and Hypertension, Meir Medical Center, Kfar Saba, Israel
- Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel
| | - Alla Shnaider
- Department of Nephrology, Soroka University Medical Center and Ben-Gurion University of the Negev, Beer-Sheva, Israel
| | - Khaled Ghanayem
- Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel
| | - Anna Basok
- Department of Nephrology, Soroka University Medical Center and Ben-Gurion University of the Negev, Beer-Sheva, Israel
| | - Boris Rogachev
- Department of Nephrology, Soroka University Medical Center and Ben-Gurion University of the Negev, Beer-Sheva, Israel
| | - Yotam Lior
- Department of Clinical Biochemistry and Pharmacology, Soroka University Medical Center and Ben-Gurion University of the Negev, Beer-Sheva, Israel
- Clinical Research Center, Soroka University Medical Center and Ben-Gurion University of the Negev, Beer-Sheva, Israel
| | - Yosef Shmuel Haviv
- Department of Nephrology, Soroka University Medical Center and Ben-Gurion University of the Negev, Beer-Sheva, Israel
| | - Keren Cohen-Hagai
- Department of Nephrology and Hypertension, Meir Medical Center, Kfar Saba, Israel
- Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel
| | - Naomi Nacasch
- Department of Nephrology and Hypertension, Meir Medical Center, Kfar Saba, Israel
| | - Ilan Rozenberg
- Department of Nephrology and Hypertension, Meir Medical Center, Kfar Saba, Israel
| | - Sydney Benchetrit
- Department of Nephrology and Hypertension, Meir Medical Center, Kfar Saba, Israel
- Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel
| | - Tali Zitman-Gal
- Department of Nephrology and Hypertension, Meir Medical Center, Kfar Saba, Israel
- Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel
| | - Amos Douvdevani
- Department of Nephrology, Soroka University Medical Center and Ben-Gurion University of the Negev, Beer-Sheva, Israel,
- Department of Clinical Biochemistry and Pharmacology, Soroka University Medical Center and Ben-Gurion University of the Negev, Beer-Sheva, Israel,
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Rosner MH. Cancer Screening in Patients Undergoing Maintenance Dialysis: Who, What, and When. Am J Kidney Dis 2020; 76:558-566. [DOI: 10.1053/j.ajkd.2019.12.018] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2019] [Accepted: 12/10/2019] [Indexed: 01/18/2023]
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Lai CF, Cheng CI, Chang CH, Chen YT, Hwang HC, Lin SL, Huang JW, Huang SJ. Integrating the Surprise Question, Palliative Care Screening Tool, and Clinical Risk Models to Identify Peritoneal Dialysis Patients With High One-Year Mortality. J Pain Symptom Manage 2020; 60:613-621.e6. [PMID: 32278098 DOI: 10.1016/j.jpainsymman.2020.03.035] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/13/2020] [Revised: 03/26/2020] [Accepted: 03/26/2020] [Indexed: 01/20/2023]
Abstract
CONTEXT Universal screening to identify vulnerable patients who may receive limited benefits from life-sustaining treatments can facilitate palliative care in dialysis populations. OBJECTIVES We aimed to develop prediction models for one-year mortality in peritoneal dialysis (PD) patients. METHODS This prospective cohort study included 401 adult Taiwanese prevalent PD patients (average age 56.2 ± 14 years). In addition to obtaining clinical characteristics and laboratory data, the primary care nurses evaluated the surprise question (SQ) and palliative care screening tool (PCST) for each patient in March 2015. Multivariate logistic regression models were conducted to predict the primary outcome of one-year all-cause mortality. RESULTS There were 34 (8.5%) patients who died during the first year of follow-up. Patients allocated to the not surprised group according to the SQ and those who received a score of ≥4 on the PCST had increased odds of death (odds ratio 24.68 [95% CI 10.66-57.13] and 12.18 [95% CI 5.66-26.21], respectively). We also developed a clinical risk model for one-year mortality that included sex, dialysis vintage, coronary artery disease, malignancy, normalized protein nitrogen appearance, white blood cell count, and serum albumin and sodium levels. Integrating the SQ, PCST, and clinical risk model exhibited good discrimination with an area under the receiver operating characteristic curve of 0.95. Kaplan-Meier analysis showed worse survival in high-risk patients predicted by the integrated model (log-rank P < 0.001). CONCLUSION Screening with the use of the integrated measurement can identify high-risk PD patients. This approach may facilitate palliative care interventions for at-risk subpopulations.
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Affiliation(s)
- Chun-Fu Lai
- Renal Division, Department of Internal Medicine, National Taiwan University Hospital and National Taiwan University College of Medicine, Taipei, Taiwan
| | - Ching-I Cheng
- Department of Nursing, National Taiwan University Hospital, Taipei, Taiwan
| | - Chin-Hao Chang
- Department of Medical Research, National Taiwan University Hospital, Taipei, Taiwan
| | - Yi-Ting Chen
- Renal Division, Department of Internal Medicine, National Taiwan University Hospital and National Taiwan University College of Medicine, Taipei, Taiwan
| | - Hsiau-Chien Hwang
- Department of Nursing, National Taiwan University Hospital, Taipei, Taiwan
| | - Shuei-Liong Lin
- Renal Division, Department of Internal Medicine, National Taiwan University Hospital and National Taiwan University College of Medicine, Taipei, Taiwan
| | - Jenq-Wen Huang
- Renal Division, Department of Internal Medicine, National Taiwan University Hospital and National Taiwan University College of Medicine, Taipei, Taiwan.
| | - Sheng-Jean Huang
- Department of Surgery, National Taiwan University Hospital and National Taiwan University College of Medicine, Taipei, Taiwan; Taipei City Hospital, Taipei, Taiwan
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Abstract
The development of dialysis by early pioneers such as Willem Kolff and Belding Scribner set in motion several dramatic changes in the epidemiology, economics and ethical frameworks for the treatment of kidney failure. However, despite a rapid expansion in the provision of dialysis — particularly haemodialysis and most notably in high-income countries (HICs) — the rate of true patient-centred innovation has slowed. Current trends are particularly concerning from a global perspective: current costs are not sustainable, even for HICs, and globally, most people who develop kidney failure forego treatment, resulting in millions of deaths every year. Thus, there is an urgent need to develop new approaches and dialysis modalities that are cost-effective, accessible and offer improved patient outcomes. Nephrology researchers are increasingly engaging with patients to determine their priorities for meaningful outcomes that should be used to measure progress. The overarching message from this engagement is that while patients value longevity, reducing symptom burden and achieving maximal functional and social rehabilitation are prioritized more highly. In response, patients, payors, regulators and health-care systems are increasingly demanding improved value, which can only come about through true patient-centred innovation that supports high-quality, high-value care. Substantial efforts are now underway to support requisite transformative changes. These efforts need to be catalysed, promoted and fostered through international collaboration and harmonization. Dialysis is a life-saving therapy; however, costs of dialysis are high, access is inequitable and outcomes are inadequate. This Review describes the current landscape of dialysis therapy from an epidemiological, economic, ethical and patient-centred framework, and describes initiatives that are aimed at stimulating innovations in the field to one that supports high-quality, high-value care. The global dialysis population is growing rapidly, especially in low-income and middle-income countries; however, worldwide, a substantial number of people lack access to kidney replacement therapy, and millions of people die of kidney failure each year, often without supportive care. The costs of dialysis care are high and will likely continue to rise as a result of increased life expectancy and improved therapies for causes of kidney failure such as diabetes mellitus and cardiovascular disease. Patients on dialysis continue to bear a high burden of disease, shortened life expectancy and report a high symptom burden and a low health-related quality of life. Patient-focused research has identified fatigue, insomnia, cramps, depression, anxiety and frustration as key symptoms contributing to unsatisfactory outcomes for patients on dialysis. Initiatives to transform dialysis outcomes for patients require both top-down efforts (that is, efforts that promote incentives based on systems level policy, regulations, macroeconomic and organizational changes) and bottom-up efforts (that is, patient-led and patient-centred advocacy efforts as well as efforts led by individual teams of innovators). Patients, payors, regulators and health-care systems increasingly demand improved value in dialysis care, which can only come about through true patient-centred innovation that supports high-quality, high-value care.
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Hall RK, Rutledge J, Luciano A, Hall K, Pieper CF, Colón-Emeric C. Physical Function Assessment in Older Hemodialysis Patients. Kidney Med 2020; 2:425-431. [PMID: 32775982 PMCID: PMC7406854 DOI: 10.1016/j.xkme.2020.03.008] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
RATIONALE & OBJECTIVE Physical function is not routinely measured in older adults receiving dialysis. We evaluated the appropriateness of repeated measurements of physical function, including Short Physical Performance Battery (SPPB), handgrip strength, and activities of daily living (ADLs), in older adults receiving dialysis. STUDY DESIGN Prospective study. SETTING & PARTICIPANTS 37 community-dwelling adults 65 years and older receiving in-center hemodialysis at 5 dialysis units located in North Carolina. EXPOSURES SPPB (an assessment of standing balance, chair stands, and gait speed), handgrip strength, and Katz and Lawton ADLs at baseline and subsequent 3-month intervals up to 6 months. OUTCOMES Completion rate, presence of floor or ceiling effects, and presence of clinically meaningful change in physical function measurements. RESULTS Of 55 potential participants, we enrolled 37 (67%) older adults receiving hemodialysis. Among 35 enrolled participants who completed baseline assessment in a dialysis unit, mean age was 70.1 (SD, 5) years, 46% (n = 16) were women, 77% (n = 27) were African American, and median time receiving dialysis was 2.7 (IQR, 0.6-5.0) years. There were 3 deaths within the observation period, and study retention at 3 and 6 months was 83% (n = 29) and 74% (n = 26), respectively. Participants tolerated measurements; only 2 participants did not attempt 1 of the performance-based tests at a study visit. Baseline median SPPB score, grip strength, and gait speed were 6 (IQR, 4-9), 55 (IQR, 42-70) kg, and 0.76 (IQR, 0.46-0.86) m/s, respectively. Baseline median for Katz and Lawton ADLs were 6 (IQR, 6-6) and 7 (IQR, 4-8), respectively; ceiling effects were observed for both measures. For some participants, clinically meaningful changes (improvement or decline) in SPPB score, grip strength, and gait speed occurred at each 3-month interval. LIMITATIONS Limited geographic and ethnic variation. CONCLUSIONS SPPB, handgrip strength, and gait speed alone are appropriate measures for interval physical function assessment in community-dwelling older adults receiving in-center hemodialysis.
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Affiliation(s)
- Rasheeda K. Hall
- Renal Section, Durham Veterans Affairs Healthcare System, Durham, NC
- Geriatric Research Education and Clinical Center, Durham Veterans Affairs Healthcare System, Durham, NC
- Division of Nephrology, Department of Medicine, Duke University, Durham, NC
- Center for the Study of Aging and Human Development, Duke University, Durham, NC
| | - Jeanette Rutledge
- Division of Nephrology, Department of Medicine, Duke University, Durham, NC
| | - Alison Luciano
- Center for the Study of Aging and Human Development, Duke University, Durham, NC
| | - Katherine Hall
- Geriatric Research Education and Clinical Center, Durham Veterans Affairs Healthcare System, Durham, NC
- Center for the Study of Aging and Human Development, Duke University, Durham, NC
- Division of Geriatric Medicine, Department of Medicine, Duke University, Durham, NC
| | - Carl F. Pieper
- Center for the Study of Aging and Human Development, Duke University, Durham, NC
- Department of Biostatistics and Bioinformatics, Duke University School of Medicine, Durham, NC
| | - Cathleen Colón-Emeric
- Geriatric Research Education and Clinical Center, Durham Veterans Affairs Healthcare System, Durham, NC
- Center for the Study of Aging and Human Development, Duke University, Durham, NC
- Division of Geriatric Medicine, Department of Medicine, Duke University, Durham, NC
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Pyart R, Aggett J, Goodland A, Jones H, Prichard A, Pugh J, Thomas N, Roberts G. Exploring the choices and outcomes of older patients with advanced kidney disease. PLoS One 2020; 15:e0234309. [PMID: 32520955 PMCID: PMC7286495 DOI: 10.1371/journal.pone.0234309] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2019] [Accepted: 05/24/2020] [Indexed: 02/08/2023] Open
Abstract
A lack of data on patient choices and outcomes at the time of pre-dialysis planning limits meaningful shared decision making, particularly in older frailer patients. In this large retrospective cohort study of patients aged over 70 seen by the pre-dialysis clinic (2004–2016) of a large single centre in the United Kingdom (1,216 patients), age, sex, comorbidity, poverty and frailty were used to predict choice of renal replacement therapy (RRT) over maximum conservative management (MCM). The impact of patient choice of RRT versus MCM was used to predict survival from the time of choice using multivariable Cox proportional hazards regression. Older age, female sex, greater poverty and greater frailty were associated with choosing MCM, whilst comorbidity had no significant impact on choice. At 5 years of follow up, 49% of all patients had died without receiving RRT. Over 70% of the patients choosing MCM died with better kidney function than the median level at which those starting RRT initiated treatment. Frailty and age were better predictors of survival than comorbidity and in patients with at least moderate frailty, RRT offered no survival benefit over MCM. In conclusion, analysing outcomes from the time of choice may improve shared decision making. Frailty should be routinely assessed and collected and further work may help predict which patients are unlikely to survive or progress to end stage renal disease and may not need to be burdened with making a pre-dialysis choice.
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Affiliation(s)
- Rhodri Pyart
- Department of Nephrology and Transplantation, University Hospital of Wales, Cardiff, United Kingdom
- * E-mail:
| | - Justine Aggett
- Department of Nephrology and Transplantation, University Hospital of Wales, Cardiff, United Kingdom
| | - Annwen Goodland
- Department of Nephrology and Transplantation, University Hospital of Wales, Cardiff, United Kingdom
| | - Hayley Jones
- Department of Nephrology and Transplantation, University Hospital of Wales, Cardiff, United Kingdom
| | - Alison Prichard
- Department of Nephrology and Transplantation, University Hospital of Wales, Cardiff, United Kingdom
| | - Julia Pugh
- Department of Nephrology and Transplantation, University Hospital of Wales, Cardiff, United Kingdom
| | - Nerys Thomas
- Department of Nephrology and Transplantation, University Hospital of Wales, Cardiff, United Kingdom
| | - Gareth Roberts
- Department of Nephrology and Transplantation, University Hospital of Wales, Cardiff, United Kingdom
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Contribution of medico-administrative data to the development of a comorbidity score to predict mortality in End-Stage Renal Disease patients. Sci Rep 2020; 10:8582. [PMID: 32444698 PMCID: PMC7244576 DOI: 10.1038/s41598-020-65612-x] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2019] [Accepted: 04/07/2020] [Indexed: 02/08/2023] Open
Abstract
Comorbidity scores to predict mortality are very useful to facilitate decision-making for personalized patient management. This study aim was to assess the contribution of medico-administrative data in addition to French Renal Epidemiology and Information Network (REIN) data to the development of a risk score to predict the 1-year all-cause mortality in patients with End Stage Renal Disease (ESRD), and to compare it with previous scores. Data from a derivation sample (n = 6336 patients who started dialysis in 2015 in France) obtained by linking the REIN and the French National Health Insurance Information System databases were analyzed with multivariate Cox models to select risk factors to establish the score. A randomly chosen validation sample (n = 2716 patients who started dialysis in 2015) was used to validate the score and to compare it with the comorbidity indexes developed by Wright and Charlson. The ability to predict one-year mortality of the score constructed using REIN data linked to the medico-administrative database was not higher than that of the score constructed using only REIN data (i.e., Rennes score). The Rennes score included five comorbidities, albumin, and age. This score (AUC = 0.794, 95%CI: 0.768–0.821) outperformed both the Wright (AUC = 0.631, 95%CI: 0.621–0.639; p < 0.001) and Charlson (AUC = 0.703, 95%CI: 0.689–0.716; p < 0.001) indexes. Data from the REIN registry alone, collected at dialysis start, are sufficient to develop a risk score that can predict the one-year mortality in patients with ESRD. This simple score might help identifying high risk patients and proposing the most adapted care.
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Duarte I, Gameiro J, Resina C, Outerelo C. In-hospital mortality in elderly patients with acute kidney injury requiring dialysis: a cohort analysis. Int Urol Nephrol 2020; 52:1117-1124. [PMID: 32372303 DOI: 10.1007/s11255-020-02482-2] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2019] [Accepted: 04/21/2020] [Indexed: 12/23/2022]
Abstract
OBJECTIVE To determine risk factors for in-hospital mortality in elderly patients with acute kidney injury (AKI) requiring dialysis. INTRODUCTION AKI requiring dialysis is frequent in elderly and is associated with an increased intra-hospital mortality. With the growing number of older individuals among hospitalized patients with AKI demands a thorough investigation of the factors that contribute to their mortality to improve outcomes. METHODS We performed a retrospective analysis of patients older than 80 years, admitted due to AKI requiring dialysis between January 2016 and December 2017. Patients who need intensive-care units (ICU) admission were excluded. The primary outcome was all-cause in-hospital mortality. RESULTS A total of 154 patients were evaluated. The mean age was 85.3 ± 4.0 years and 76 patients (49.4%) were male. The overall mortality rate was 26.6%. On the multivariate analysis, serum albumin (OR 0.42 [95% CI 0.21-0.85], p 0.016), C reactive protein/albumin ratio (OR 1.04 [95% CI 0.99-1.09], and renal function recovery (OR 018 [95% CI 0.49-0.65], p 0.009) were the factors associated with higher in-hospital mortality. CONCLUSIONS Lower albumin level, higher C reactive protein/albumin ratio at admission, and absence of renal function recovery are associated with increased in-hospital mortality's risk in elderly with acute kidney injury requiring dialysis.
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Affiliation(s)
- Inês Duarte
- Division of Nephrology and Renal Transplantation, Department of Medicine, Centro Hospitalar Universitário Lisboa Norte, EPE, Av. Prof. Egas Moniz, 1649-035, Lisbon, Portugal.
| | - Joana Gameiro
- Division of Nephrology and Renal Transplantation, Department of Medicine, Centro Hospitalar Universitário Lisboa Norte, EPE, Av. Prof. Egas Moniz, 1649-035, Lisbon, Portugal
| | - Cristina Resina
- Division of Nephrology and Renal Transplantation, Department of Medicine, Centro Hospitalar Universitário Lisboa Norte, EPE, Av. Prof. Egas Moniz, 1649-035, Lisbon, Portugal
| | - Cristina Outerelo
- Division of Nephrology and Renal Transplantation, Department of Medicine, Centro Hospitalar Universitário Lisboa Norte, EPE, Av. Prof. Egas Moniz, 1649-035, Lisbon, Portugal
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Ghanem S, Hossri S, Fuca N, Granina E, Saouma S, Forte F. Patient-nephrologist prognostic awareness and discordance in end stage renal disease on renal replacement therapy. Int Urol Nephrol 2020; 52:765-773. [PMID: 32125588 DOI: 10.1007/s11255-020-02420-2] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2019] [Accepted: 02/17/2020] [Indexed: 10/24/2022]
Abstract
PURPOSE The 1-year mortality rate of patients with end-stage renal disease (ESRD) on renal replacement therapy (RRT) is 20-25% comparable to many cancers. Studies have shown that cancer patients commonly overestimate their likelihood of survival relative to their physicians. It is unclear if this translates into other terminal illnesses. METHODS Adult and elderly patients with ESRD on RRT without cognitive defect were interviewed to evaluate their prognostic estimates at 1 and 5 years. Past medical history and demographic data was abstracted from their medical charts. Each patient's proper nephrologist was then interviewed regarding his proper prognostic estimate for this patient. Both the patient and the nephrologist's estimates were compared and a difference of greater than 20% was defined as the threshold for prognostic concordance. RESULTS 77% of patients were found to be in prognostic discordance with their nephrologists. This group was older, had more comorbidities, a lower albumin level and a poorer prognosis. The majority of patients were in disagreement with their nephrologists regarding whether a discussion about prognosis had taken place. The choice of end of life care for 55% of patients was focused on relieving pain and discomfort. CONCLUSION Communication of prognosis and discussions related to life expectancy and end of life care are lacking in the routine care of ESRD patients. ESRD patients therefore tend to overestimate their prognosis which might lead to overutilization of invasive procedures with increased acute healthcare costs as well as a delay in instigation of palliative or hospice measures.
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Affiliation(s)
- Sassine Ghanem
- Department of Hematology and Medical Oncology, SUNY Downstate Medical Center, 450 Clarkson Avenue, Brooklyn, NY, USA.
| | - Sami Hossri
- Department of Pulmonary and Critical Care, Northwell Health - Staten Island University Hospital, Staten Island, NY, USA
| | - Nicholas Fuca
- Department of Nephrology, Mount Sinai, New York, NY, USA
| | - Evgenia Granina
- Department of Hospice and Palliative Care Medicine, Virginia Commonwealth University, Richmond, VA, USA
| | - Samer Saouma
- Department of Cardiology, Northwell Health - Staten Island University Hospital, Staten Island, NY, USA
| | - Frank Forte
- Department of Hospice and Palliative Care Medicine, Northwell Health - Staten Island University Hospital, Staten Island, NY, USA
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Raj R, Brown B, Ahuja K, Frandsen M, Jose M. Enabling good outcomes in older adults on dialysis: a qualitative study. BMC Nephrol 2020; 21:28. [PMID: 31996167 PMCID: PMC6988330 DOI: 10.1186/s12882-020-1695-1] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2019] [Accepted: 01/20/2020] [Indexed: 12/19/2022] Open
Abstract
Background Older patients on dialysis may not have optimal outcomes, particularly with regards to quality of life. Existing research is focused mainly on survival, with limited information about other outcomes. Such information can help in shared decision-making around dialysis initiation; it can also be used to improve outcomes in patients established on dialysis. We used qualitative research methods to explore patient perspectives regarding their experience and outcomes with dialysis. Methods Semi-structured interviews with participants aged ≥70, receiving dialysis at a regional Australian hospital, were recorded and transcribed. From participants’ responses, we identified descriptive themes using a phenomenological approach, with verification by two researchers. Factors affecting outcomes were derived reflexively from these themes. Results Seventeen interviews were analysed prior to saturation of themes. Participants (12 on haemodialysis, 5 on peritoneal dialysis) had spent an average of 4.3 years on dialysis. There were 11 males and 6 females, with mean age 76.2 years (range 70 to 83). Experiences of dialysis were described across four domains - the self, the body, effects on daily life and the influences of others; yielding themes of (i) responses to loss (of time, autonomy, previous life), (ii) responses to uncertainty (variable symptoms; unpredictable future; dependence on others), (iii) acceptance / adaptation (to life on dialysis; to ageing) and (iv) the role of relationships / support (family, friends and clinicians). Conclusions Older patients experience the effects of dialysis across multiple domains in their lives. They endure feelings of loss and persistent uncertainty, but may also adapt successfully to their new circumstances, aided by the support they receive from family, health professionals and institutions. From these insights, we have suggested practical measures to improve outcomes in older patients.
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Affiliation(s)
- Rajesh Raj
- School of Medicine, University of Tasmania, Hobart, Australia. .,Launceston General Hospital, Launceston, Tasmania, 7250, Australia.
| | - Bridget Brown
- Launceston General Hospital, Launceston, Tasmania, 7250, Australia
| | - Kiran Ahuja
- School of Health Sciences, University of Tasmania, Hobart, Australia
| | - Mai Frandsen
- Faculty of Health, University of Tasmania, Hobart, Australia
| | - Matthew Jose
- School of Medicine, University of Tasmania, Hobart, Australia
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Villain C, Fouque D. Choosing end-stage kidney disease treatment with elderly patients: are data available? Nephrol Dial Transplant 2020; 34:1432-1435. [PMID: 30690501 DOI: 10.1093/ndt/gfy404] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2018] [Indexed: 11/14/2022] Open
Affiliation(s)
- Cédric Villain
- Service de Gériatrie, Groupement Hospitalier Pitié-Salpêtrière-Charles Foix, Assistance Publique - Hôpitaux de Paris, Sorbonne Université, Paris, France.,INSERM U-1018, CESP équipe 5, EpRec, Université Versailles-Saint-Quentin, Villejuif, France
| | - Denis Fouque
- Universite Lyon, UCBL, INSERM CarMeN, CENS, Service de Néphrologie-Nutrition-Dialyse, Centre Hospitalier Lyon Sud, Pierre-Bénite, France
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Santos J, Oliveira P, Malheiro J, Campos A, Correia S, Cabrita A, Lobato L, Fonseca I. Predicting 6-Month Mortality in Incident Elderly Dialysis Patients: A Simple Prognostic Score. Kidney Blood Press Res 2019; 45:38-50. [PMID: 31825925 DOI: 10.1159/000504136] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2019] [Accepted: 10/12/2019] [Indexed: 11/19/2022] Open
Abstract
AIM Mortality in end-stage renal disease (ESRD) remains high, particularly among elderly, who represents the most rapidly growing segment of the ESRD population in wealthier countries. We developed and validated a risk score in elderly patients to predict 6-month mortality after dialysis initiation. METHODS We used data from a cohort of 421 patients, aged 65 years and over who started dialysis between 2009 and 2016, in our Nephrology department. The predictive score was developed using a multivariable logistic regression analysis. A bootstrapping technique was used for internal validation. RESULTS The overall mortality within 6 months was 14.0%. Five independent predictors were identified, and a points system was constructed: age 75 years or older (2 points), coronary artery disease (2), cerebrovascular disease with hemiplegia (2), time of nephrology care before dialysis (<3.0 months [2]; ≥3 to <12 months [1]), and serum albumin levels (3.0-3.49 g/dL [1]; <3.0 g/dL [2]). A score of 6 identified patients with a 70% risk of 6-month mortality. Model performance was good in both discrimination (area under the curve of 0.793; [95% CI 0.73-0.86]) and validation (concordance statistics of 0.791 [95% CI 0.73-0.85]). CONCLUSIONS We developed a simple prediction score based on readily available clinical and laboratory data that can be a practical and useful tool to assess short-term prognosis in elderly patients starting dialysis. It may help to inform patients and their families about ESRD treatment options and provide a more patient-centered overall approach to care.
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Affiliation(s)
- Josefina Santos
- Department of Nephrology, Hospital de Santo António, Centro Hospitalar do Porto, Porto, Portugal, .,Unit for Multidisciplinary Research in Biomedicine, Instituto de Ciências Biomédicas Abel Salazar Porto, Universidade do Porto, Porto, Portugal,
| | - Pedro Oliveira
- EPI Unit, ISPUP, Institute of Public Health, Universidade do Porto, Porto, Portugal.,Department of Population Studies, Instituto de Ciências Biomédicas Abel Salazar Porto, Universidade do Porto, Porto, Portugal
| | - Jorge Malheiro
- Department of Nephrology, Hospital de Santo António, Centro Hospitalar do Porto, Porto, Portugal.,Unit for Multidisciplinary Research in Biomedicine, Instituto de Ciências Biomédicas Abel Salazar Porto, Universidade do Porto, Porto, Portugal
| | - Andreia Campos
- Department of Nephrology, Hospital de Santo António, Centro Hospitalar do Porto, Porto, Portugal
| | - Sofia Correia
- Department of Nephrology, Hospital de Santo António, Centro Hospitalar do Porto, Porto, Portugal
| | - António Cabrita
- Department of Nephrology, Hospital de Santo António, Centro Hospitalar do Porto, Porto, Portugal
| | - Luísa Lobato
- Department of Nephrology, Hospital de Santo António, Centro Hospitalar do Porto, Porto, Portugal.,Unit for Multidisciplinary Research in Biomedicine, Instituto de Ciências Biomédicas Abel Salazar Porto, Universidade do Porto, Porto, Portugal
| | - Isabel Fonseca
- Department of Nephrology, Hospital de Santo António, Centro Hospitalar do Porto, Porto, Portugal.,Unit for Multidisciplinary Research in Biomedicine, Instituto de Ciências Biomédicas Abel Salazar Porto, Universidade do Porto, Porto, Portugal.,EPI Unit, ISPUP, Institute of Public Health, Universidade do Porto, Porto, Portugal
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Raj R, Thiruvengadam S, Ahuja KDK, Frandsen M, Jose M. Discussions during shared decision-making in older adults with advanced renal disease: a scoping review. BMJ Open 2019; 9:e031427. [PMID: 31767590 PMCID: PMC6887047 DOI: 10.1136/bmjopen-2019-031427] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/23/2022] Open
Abstract
OBJECTIVES This review summarises the information available for clinicians counselling older patients with kidney failure about treatment options, focusing on prognosis, quality of life, the lived experiences of treatment and the information needs of older adults. DESIGN We followed the Joanna Briggs Institute Methodology for Scoping Reviews. The final report conforms to the PRISMA-ScR guidelines. DATA SOURCES PubMed, PsycINFO, CINAHL, Embase, Scopus, Web of Science, TRIP and online repositories (for dissertations, guidelines and recommendations from national renal associations). ELIGIBILITY CRITERIA FOR INCLUSION Articles in English studying older adults with advanced kidney disease (estimated glomerular filtration rate <30 mL/min/1.73 m2); published between January 2000 and August 2018. Articles not addressing older patients separately or those comparing between dialysis modalities were excluded. DATA EXTRACTION AND SYNTHESIS Two independent reviewers screened articles for inclusion and grouped them by topic as per the objectives above. Quantitative data were presented as tables and charts; qualitative themes were identified and described. RESULTS 248 articles were included after screening 15 445 initial results. We summarised prognostic scores and compared dialysis and non-dialytic care. We highlighted potentially modifiable factors affecting quality of life. From reports of the lived experiences, we documented the effects of symptoms, of ageing, the feelings of disempowerment and the need for adaptation. Exploration of information needs suggested that patients want to participate in decision-making and need information, in simple terms, about survival and non-survival outcomes. CONCLUSION When discussing treatment options, validated prognostic scores are useful. Older patients with multiple comorbidities do not do well with dialysis. The modifiable factors contributing to the low quality of life in this cohort deserve attention. Older patients suffer a high symptom burden and functional deterioration; they have to cope with significant life changes and feelings of disempowerment. They desire greater involvement and more information about illness, symptoms and what to expect with treatment.
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Affiliation(s)
- Rajesh Raj
- Department of Nephrology, Launceston General Hospital, Launceston, Tasmania, Australia
- School of Medicine, University of Tasmania, Hobart, Tasmania, Australia
| | | | | | - Mai Frandsen
- Faculty of Health, University of Tasmania, Launceston, Tasmania, Australia
| | - Matthew Jose
- School of Medicine, University of Tasmania, Hobart, Tasmania, Australia
- Department of Nephrology, Royal Hobart Hospital, Hobart, Tasmania, Australia
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Bradshaw CL, Gale RC, Chettiar A, Ghaus SJ, Thomas IC, Fung E, Lorenz K, Asch SM, Anand S, Kurella Tamura M. Medical Record Documentation of Goals-of-Care Discussions Among Older Veterans With Incident Kidney Failure. Am J Kidney Dis 2019; 75:744-752. [PMID: 31679746 DOI: 10.1053/j.ajkd.2019.07.024] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2019] [Accepted: 07/26/2019] [Indexed: 11/11/2022]
Abstract
RATIONALE & OBJECTIVE Elicitation and documentation of patient preferences is at the core of shared decision making and is particularly important among patients with high anticipated mortality. The extent to which older patients with incident kidney failure undertake such discussions with their providers is unknown and its characterization was the focus of this study. STUDY DESIGN Retrospective cohort study. SETTING & PARTICIPANTS A random sample of veterans 67 years and older with incident kidney failure receiving care from the US Veterans Health Administration between 2005 and 2010. EXPOSURES Demographic and facility characteristics, as well as predicted 6-month mortality risk after dialysis initiation and documentation of resuscitation preferences. OUTCOMES Documented discussions of dialysis treatment and supportive care. ANALYTICAL APPROACH We reviewed medical records over the 2 years before incident kidney failure and up to 1 year afterward to ascertain the frequency and timing of documented discussions about dialysis treatment, supportive care, and resuscitation. Logistic regression was used to identify factors associated with these documented discussions. RESULTS The cohort of 821 veterans had a mean age of 80.9±7.2 years, and 37.2% had a predicted 6-month mortality risk>20% with dialysis. Documented discussions addressing dialysis treatment and resuscitation were present in 55.6% and 77.1% of patients, respectively. Those addressing supportive care were present in 32.4%. The frequency of documentation varied by mortality risk and whether the patient ultimately started dialysis. In adjusted analyses, the frequency and pattern of documentation were more strongly associated with geographic location and receipt of outpatient nephrology care than with patient demographic or clinical characteristics. LIMITATIONS Documentation may not fully reflect the quality and content of discussions, and generalizability to nonveteran patients is limited. CONCLUSIONS Among older veterans with incident kidney failure, discussions of dialysis treatment are decoupled from other aspects of advance care planning and are suboptimally documented, even among patients at high risk for mortality.
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Affiliation(s)
| | - Randall C Gale
- Center for Innovation to Implementation, VA Palo Alto VA Health Care System, Palo Alto, CA
| | - Alexis Chettiar
- Program of Health Policy, University of California San Francisco, San Francisco, CA
| | - Sharfun J Ghaus
- Division of Nephrology, Stanford University School of Medicine, Palo Alto, CA
| | - I-Chun Thomas
- Geriatric Research and Education Clinical Center, VA Palo Alto Health Care System, Palo Alto, CA
| | - Enrica Fung
- Division of Nephrology, VA Loma Linda Healthcare System, Loma Linda, CA
| | - Karl Lorenz
- Geriatric Research and Education Clinical Center, VA Palo Alto Health Care System, Palo Alto, CA
| | - Steven M Asch
- Center for Innovation to Implementation, VA Palo Alto VA Health Care System, Palo Alto, CA
| | - Shuchi Anand
- Division of Nephrology, Stanford University School of Medicine, Palo Alto, CA
| | - Manjula Kurella Tamura
- Division of Nephrology, Stanford University School of Medicine, Palo Alto, CA; Geriatric Research and Education Clinical Center, VA Palo Alto Health Care System, Palo Alto, CA
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Inaguma D, Morii D, Kabata D, Yoshida H, Tanaka A, Koshi-Ito E, Takahashi K, Hayashi H, Koide S, Tsuboi N, Hasegawa M, Shintani A, Yuzawa Y. Prediction model for cardiovascular events or all-cause mortality in incident dialysis patients. PLoS One 2019; 14:e0221352. [PMID: 31437231 PMCID: PMC6705850 DOI: 10.1371/journal.pone.0221352] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2019] [Accepted: 08/05/2019] [Indexed: 11/18/2022] Open
Abstract
Some variables including age, comorbidity of diabetes, and so on at dialysis initiation are associated with patient prognosis. Cardiovascular (CV) events are a major cause of death, and adequate models that predict prognosis in dialysis patients are warranted. Therefore, we created models using some variables at dialysis initiation. We used a database of 1,520 consecutive dialysis patients (median age, 70 years; 492 women [32.4%]) from a multicenter prospective cohort study. We established the primary endpoint as a composite of the incidence of first CV events or all-cause death. A multivariable Cox proportional hazard regression model was used to construct a model. We considered a complex and a simple model. We used area under the receiver operating characteristic curve (AUROC) to assess and compare the predictive performances of the prediction models and evaluated the improvement in discrimination using the complex model versus the simple model using net reclassification improvement (NRI). We then assessed integrated discrimination improvement (IDI) to evaluate improvements in average sensitivity and specificity. Of 392 deaths, 152 were CV-related. Totally, 506 CV events occurred during the follow-up period (median 1,285 days). Finally, 692 patients reached the primary endpoint. Baseline data were set at dialysis initiation. AUROC for the primary endpoint was 0.737 (95% confidence interval [CI], 0.712–0.761) in the simple model and 0.765 (95% CI, 0.741–0.788) in the complex model. There were significant intergroup differences in NRI (0.44; 95% CI, 0.34–0.53; p < 0.001) and IDI (0.02; 95% CI, 0.02–0.03; p < 0.001). We prepared a Shiny R application for each model to automatically calculate the predicted occurrence probability (https://statacademy.shinyapps.io/App_inaguma_20190717/). The complex model made more accurate predictions than the simple model. However, the intergroup difference was not significant. Hence, the simple model was more useful than the complex model. The tool was useful in a real-world clinical setting because it required only routinely available variables. Moreover, we emphasized that the tool could predict the incidence of CV events or all-cause mortality for individual patients. In the future, we must confirm its external validity in other prospective cohorts.
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Affiliation(s)
- Daijo Inaguma
- Department of Nephrology, Fujita Health University School of Medicine, Toyoake, Japan
- The Aichi Cohort Study of Prognosis in Patients Newly Initiated into Dialysis (AICOPP) Group, Aichi, Japan
- * E-mail:
| | - Daichi Morii
- Department of Medical Statistics, Osaka City University Graduate School of Medicine, Osaka, Japan
| | - Daijiro Kabata
- Department of Medical Statistics, Osaka City University Graduate School of Medicine, Osaka, Japan
| | - Hiroyuki Yoshida
- Department of Nephrology, Fujita Health University School of Medicine, Toyoake, Japan
| | - Akihito Tanaka
- The Aichi Cohort Study of Prognosis in Patients Newly Initiated into Dialysis (AICOPP) Group, Aichi, Japan
- Department of Nephrology, Nagoya University School of Medicine, Nagoya, Japan
| | - Eri Koshi-Ito
- Department of Nephrology, Fujita Health University School of Medicine, Toyoake, Japan
| | - Kazuo Takahashi
- Department of Nephrology, Fujita Health University School of Medicine, Toyoake, Japan
| | - Hiroki Hayashi
- Department of Nephrology, Fujita Health University School of Medicine, Toyoake, Japan
| | - Shigehisa Koide
- Department of Nephrology, Fujita Health University School of Medicine, Toyoake, Japan
- The Aichi Cohort Study of Prognosis in Patients Newly Initiated into Dialysis (AICOPP) Group, Aichi, Japan
| | - Naotake Tsuboi
- Department of Nephrology, Fujita Health University School of Medicine, Toyoake, Japan
| | - Midori Hasegawa
- Department of Nephrology, Fujita Health University School of Medicine, Toyoake, Japan
| | - Ayumi Shintani
- Department of Medical Statistics, Osaka City University Graduate School of Medicine, Osaka, Japan
| | - Yukio Yuzawa
- Department of Nephrology, Fujita Health University School of Medicine, Toyoake, Japan
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Viecelli AK, Lok CE. Hemodialysis vascular access in the elderly-getting it right. Kidney Int 2019; 95:38-49. [PMID: 30606427 DOI: 10.1016/j.kint.2018.09.016] [Citation(s) in RCA: 29] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2018] [Revised: 08/21/2018] [Accepted: 09/11/2018] [Indexed: 01/01/2023]
Abstract
Choosing the optimal hemodialysis vascular access for the elderly patient is best achieved by a patient-centered coordinated multidisciplinary team approach that aligns the patient's end-stage kidney disease Life-Plan, i.e., the individual treatment approach (supportive care, time-limited or long-term kidney replacement therapy, or combination thereof) and selection of dialysis modality (peritoneal dialysis versus hemodialysis) with the most suitable dialysis access. Finding the right balance between the patient's preferences, the likelihood of access function and survival, and potential complications in the context of available resources and limited patient survival can be extremely challenging. The framework for choosing the most appropriate vascular access for the elderly presented in this review considers the individual end-stage kidney disease Life-Plan, the patient life expectancy, the likelihood of access function and survival, the timing of dialysis relative to access placement, prior access history, and patient preference. This complex decision-making process should be dynamic in order to accommodate patients' changing needs and life and health circumstances. Effective and timely communication between the patient, their caregivers, and treating team is key to delivering truly patient-centered care. Delivering this care also requires overcoming the limitations of the currently available evidence that is predominantly based on observational data with its inherent risks of bias. While challenging, future randomized controlled studies exploring the risks, benefits, costs, and timing of placement of available access types in the elderly are required to help us "get it right" for our patients.
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Affiliation(s)
- Andrea K Viecelli
- Department of Nephrology, Princess Alexandra Hospital, Brisbane, Australia; Faculty of Medicine, University of Queensland, Brisbane, Australia
| | - Charmaine E Lok
- Division of Nephrology, University Health Network, Toronto, Ontario, Canada; Department of Medicine, University of Toronto, Toronto, Ontario, Canada.
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van Loon IN, Goto NA, Boereboom FTJ, Bots ML, Hoogeveen EK, Gamadia L, van Bommel EFH, van de Ven PJG, Douma CE, Vincent HH, Schrama YC, Lips J, Siezenga MA, Abrahams AC, Verhaar MC, Hamaker ME. Geriatric Assessment and the Relation with Mortality and Hospitalizations in Older Patients Starting Dialysis. Nephron Clin Pract 2019; 143:108-119. [PMID: 31408861 DOI: 10.1159/000501277] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2018] [Accepted: 06/01/2019] [Indexed: 12/14/2022] Open
Abstract
BACKGROUND AND OBJECTIVES A geriatric assessment (GA) is a structural method for identifying frail patients. The relation of GA findings and risk of death in end-stage kidney disease (ESKD) is not known. The objective of the GA in OLder patients starting Dialysis Study was to assess the association of GA at dialysis initiation with early mortality and hospitalization. DESIGN, SETTING, PARTICIPANTS, AND MEASUREMENTS Patients ≥65 years old were included just prior to dialysis initiation. All participants underwent a GA, including assessment of (instrumental) activities of daily living (ADL), mobility, cognition, mood, nutrition, and comorbidity. In addition, a frailty screening (Fried Frailty Index, [FFI]) was applied. Outcome measures were 6- and 12-month mortality, and 6-month hospitalization. Associations with mortality were assessed with cox-regression adjusting for age, sex, comorbidity burden, smoking, residual kidney function and dialysis modality. Associations with hospitalization were assessed with logistic regression, adjusting for relevant confounders. RESULTS In all, 192 patients were included, mean age 75 ± 7 years, of whom 48% had ≥3 geriatric impairments and were considered frail. The FFI screening resulted in 46% frail patients. Mortality rate was 8 and 15% at 6- and 12-months after enrolment, and transplantation rate was 2 and 4% respectively. Twelve-month mortality risk was higher in patients with ≥3 impairments (hazard ratio [HR] 2.97 [95% CI 1.19-7.45]) compared to less impaired patients. FFI frail patients had a higher risk of 12-month mortality (HR 7.22 [95% CI 2.47-21.13]) and hospitalization (OR 1.93 [95% CI 1.00-3.72]) compared to fit patients. Malnutrition was associated with 12-month mortality, while impaired ADL and depressive symptoms were associated with 12-month mortality and hospitalization. CONCLUSIONS Frailty as assessed by a GA is related to mortality in elderly patients with ESKD. Individual components of the GA are related to both mortality and hospitalization. As the GA allows for distinguishing between frail and fit patients initiating dialysis, it is potentially of added value in the decision-making process concerning dialysis initiation.
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Affiliation(s)
- Ismay N van Loon
- Dianet Dialysis Center, Utrecht, The Netherlands, .,Department of Internal Medicine, Diakonessenhuis Utrecht, Utrecht, The Netherlands, .,Department of Nephrology and Hypertension, University Medical Center Utrecht, Utrecht, The Netherlands,
| | - Namiko A Goto
- Department of Geriatrics, Diakonessenhuis Utrecht, Utrecht, The Netherlands
| | - Franciscus T J Boereboom
- Dianet Dialysis Center, Utrecht, The Netherlands.,Department of Internal Medicine, Diakonessenhuis Utrecht, Utrecht, The Netherlands
| | - Michiel L Bots
- Julius Center for Health Sciences and Primary Care, University Medical Center Utrecht, Utrecht, The Netherlands
| | - Ellen K Hoogeveen
- Department of Internal Medicine Jeroen Bosch Hospital, 's-Hertogenbosch, The Netherlands
| | - Laila Gamadia
- Department of Internal Medicine Tergooi Hospital, Hilversum, The Netherlands
| | - E F H van Bommel
- Department of Internal Medicine Albert Schweitzer Hospital, Dordrecht, The Netherlands
| | - P J G van de Ven
- Department of Internal Medicine Maasstad Hospital, Rotterdam, The Netherlands
| | - Caroline E Douma
- Department of Internal Medicine Spaarne Gasthuis, Hoofddorp, The Netherlands
| | - H H Vincent
- Department of Internal Medicine Antonius Hospital, Nieuwegein, The Netherlands
| | - Yvonne C Schrama
- Department of Internal Medicine St. Franciscus Hospital, Rotterdam, The Netherlands
| | - Joy Lips
- Department of Internal Medicine Bernhoven Hospital, Uden, The Netherlands
| | - Machiel A Siezenga
- Department of Internal Medicine Gelderse Vallei Hospital, Ede, The Netherlands
| | - Alferso C Abrahams
- Department of Nephrology and Hypertension, University Medical Center Utrecht, Utrecht, The Netherlands
| | - Marianne C Verhaar
- Department of Nephrology and Hypertension, University Medical Center Utrecht, Utrecht, The Netherlands
| | - Marije E Hamaker
- Department of Geriatrics University Medical Center Utrecht, Utrecht, The Netherlands
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47
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Anderson RT, Cleek H, Pajouhi AS, Bellolio MF, Mayukha A, Hart A, Hickson LJ, Feely MA, Wilson ME, Giddings Connolly RM, Erwin PJ, Majzoub AM, Tangri N, Thorsteinsdottir B. Prediction of Risk of Death for Patients Starting Dialysis: A Systematic Review and Meta-Analysis. Clin J Am Soc Nephrol 2019; 14:1213-1227. [PMID: 31362990 PMCID: PMC6682819 DOI: 10.2215/cjn.00050119] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/02/2019] [Accepted: 06/11/2019] [Indexed: 12/11/2022]
Abstract
BACKGROUND AND OBJECTIVES Dialysis is a preference-sensitive decision where prognosis may play an important role. Although patients desire risk prediction, nephrologists are wary of sharing this information. We reviewed the performance of prognostic indices for patients starting dialysis to facilitate bedside translation. DESIGN, SETTING, PARTICIPANTS, & MEASUREMENTS Systematic review and meta-analysis following the PRISMA guidelines. We searched Ovid MEDLINE, Ovid Embase, Ovid Central Register of Controlled Trials, Ovid Cochrane Database of Systematic Reviews, and Scopus for eligible studies of patients starting dialysis published from inception to December 31, 2018. SELECTION CRITERIA Articles describing validated prognostic indices predicting mortality at the start of dialysis. We excluded studies limited to prevalent dialysis patients, AKI and studies excluding mortality in the first 1-3 months. Two reviewers independently screened abstracts, performed full text assessment of inclusion criteria and extracted: study design, setting, population demographics, index performance and risk of bias. Pre-planned random effects meta-analysis was performed stratified by index and predictive window to reduce heterogeneity. RESULTS Of 12,132 articles screened and 214 reviewed in full text, 36 studies were included describing 32 prognostic indices. Predictive windows ranged from 3 months to 10 years, cohort sizes from 46 to 52,796. Meta-analysis showed discrimination area under the curve (AUC) of 0.71 (95% confidence interval, 0.69 to 073) with high heterogeneity (I2=99.12). Meta-analysis by index showed highest AUC for The Obi, Ivory, and Charlson comorbidity index (CCI)=0.74, also CCI was the most commonly used (ten studies). Other commonly used indices were Kahn-Wright index (eight studies, AUC 0.68), Hemmelgarn modification of the CCI (six studies, AUC 0.66) and REIN index (five studies, AUC 0.69). Of the indices, ten have been validated externally, 16 internally and nine were pre-existing validated indices. Limitations include heterogeneity and exclusion of large cohort studies in prevalent patients. CONCLUSIONS Several well validated indices with good discrimination are available for predicting survival at dialysis start.
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Affiliation(s)
| | | | | | | | | | - Allyson Hart
- Department of Medicine, University of Minnesota, Minneapolis, Minnesota
- Hennepin County Medical Center, Minneapolis, Minnesota
| | - LaTonya J. Hickson
- Division of Nephrology and Hypertension
- Robert D. and Patricia E. Kern Center for Science of Health Care Delivery
| | | | - Michael E. Wilson
- Biomedical Ethics Program
- Division of Pulmonary and Critical Care Medicine, and
| | | | | | | | - Navdeep Tangri
- Department of Medicine and
- Department of Community Health Sciences, Seven Oaks General Hospital, University of Manitoba, Winnipeg, Canada
| | - Bjorg Thorsteinsdottir
- Biomedical Ethics Program
- Division of Community Internal Medicine
- Robert D. and Patricia E. Kern Center for Science of Health Care Delivery
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Artificial Intelligence Prediction Model for the Cost and Mortality of Renal Replacement Therapy in Aged and Super-Aged Populations in Taiwan. J Clin Med 2019; 8:jcm8070995. [PMID: 31323939 PMCID: PMC6678226 DOI: 10.3390/jcm8070995] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2019] [Revised: 07/08/2019] [Accepted: 07/08/2019] [Indexed: 11/17/2022] Open
Abstract
BACKGROUND Prognosis of the aged population requiring maintenance dialysis has been reportedly poor. We aimed to develop prediction models for one-year cost and one-year mortality in aged individuals requiring dialysis to assist decision-making for deciding whether aged people should receive dialysis or not. METHODS We used data from the National Health Insurance Research Database (NHIRD). We identified patients first enrolled in the NHIRD from 2000-2011 for end-stage renal disease (ESRD) who underwent regular dialysis. A total of 48,153 Patients with ESRD aged ≥65 years with complete age and sex information were included in the ESRD cohort. The total medical cost per patient (measured in US dollars) within one year after ESRD diagnosis was our study's main outcome variable. We were also concerned with mortality as another outcome. In this study, we compared the performance of the random forest prediction model and of the artificial neural network prediction model for predicting patient cost and mortality. RESULTS In the cost regression model, the random forest model outperforms the artificial neural network according to the mean squared error and mean absolute error. In the mortality classification model, the receiver operating characteristic (ROC) curves of both models were significantly better than the null hypothesis area of 0.5, and random forest model outperformed the artificial neural network. Random forest model outperforms the artificial neural network models achieved similar performance in the test set across all data. CONCLUSIONS Applying artificial intelligence modeling could help to provide reliable information about one-year outcomes following dialysis in the aged and super-aged populations; those with cancer, alcohol-related disease, stroke, chronic obstructive pulmonary disease (COPD), previous hip fracture, osteoporosis, dementia, and previous respiratory failure had higher medical costs and a high mortality rate.
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49
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Goto NA, van Loon IN, Boereboom FTJ, Emmelot-Vonk MH, Willems HC, Bots ML, Gamadia LE, van Bommel EFH, Van de Ven PJG, Douma CE, Vincent HH, Schrama YC, Lips J, Hoogeveen EK, Siezenga MA, Abrahams AC, Verhaar MC, Hamaker ME. Association of Initiation of Maintenance Dialysis with Functional Status and Caregiver Burden. Clin J Am Soc Nephrol 2019; 14:1039-1047. [PMID: 31248948 PMCID: PMC6625621 DOI: 10.2215/cjn.13131118] [Citation(s) in RCA: 40] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2018] [Accepted: 04/12/2019] [Indexed: 01/20/2023]
Abstract
BACKGROUND AND OBJECTIVES Little is known about the functional course after initiating dialysis in elderly patients with ESKD. The aim of this study was to assess the association of the initiation of dialysis in an elderly population with functional status and caregiver burden. DESIGN, SETTING, PARTICIPANTS & MEASUREMENTS This study included participants aged ≥65 years with ESKD who were enrolled in the Geriatric Assessment in Older Patients Starting Dialysis study. All underwent a geriatric assessment and a frailty screening (Fried Frailty Index and Groningen Frailty Indicator) at dialysis initiation. Functional status (activities of daily life and instrumental activities of daily life) and caregiver burden were assessed at baseline and after 6 months. Decline was defined as loss of one or more domains in functional status, stable as no difference between baseline and follow-up, and improvement as gain of one or more domains in functional status. Logistic regression was performed to assess the association between the combined outcome functional decline/death and potential risk factors. RESULTS Of the 196 included participants functional data were available for 187 participants. Mean age was 75±7 years and 33% were women. At the start of dialysis, 79% were care dependent in functional status. After 6 months, 40% experienced a decline in functional status, 34% remained stable, 18% improved, and 8% died. The prevalence of high caregiver burden increased from 23%-38% (P=0.004). In the multivariable analysis age (odds ratio, 1.05; 95% confidence interval, 1.00 to 1.10 per year older at baseline) and a high Groningen Frailty Indicator compared with low score (odds ratio, 1.97; 95% confidence interval, 1.05 to 3.68) were associated with functional decline/death. CONCLUSIONS In patients aged ≥65 years, functional decline within the first 6 months after initiating dialysis is highly prevalent. The risk is higher in older and frail patients. Loss in functional status was mainly driven by decline in instrumental activities of daily life. Moreover, initiation of dialysis is accompanied by an increase in caregiver burden.
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Affiliation(s)
- Namiko A Goto
- Dianet Dialysis Center, Utrecht, The Netherlands; .,Department of Geriatrics
| | - Ismay N van Loon
- Dianet Dialysis Center, Utrecht, The Netherlands.,Department of Nephrology and Hypertension, and
| | | | | | - Hanna C Willems
- Department of Geriatrics, Academic Medical Center Amsterdam, Amsterdam, The Netherlands
| | - Michiel L Bots
- Julius Center for Health Sciences and Primary Care, University Medical Center Utrecht, Utrecht, The Netherlands
| | - Laila E Gamadia
- Department of Internal Medicine, Tergooi Hospital, Hilversum, The Netherlands
| | - Eric F H van Bommel
- Department of Internal Medicine, Albert Schweitzer Hospital, Dordrecht, The Netherlands
| | | | - Caroline E Douma
- Department of Internal Medicine, Spaarne Gasthuis, Hoofddorp, The Netherlands
| | | | - Yvonne C Schrama
- Department of Internal Medicine, St. Franciscus Hospital, Rotterdam, The Netherlands
| | - Joy Lips
- Department of Internal Medicine, Bernhoven Hospital, Uden, The Netherlands
| | - Ellen K Hoogeveen
- Department of Internal Medicine, Jeroen Bosch Hospital, 's-Hertogenbosch, The Netherlands; and
| | - Machiel A Siezenga
- Department of Internal Medicine, Gelderse Vallei Hospital, Ede, The Netherlands
| | | | | | - Marije E Hamaker
- Department of Geriatrics, Diakonessenhuis Utrecht, Utrecht, The Netherlands
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Machine Learning to Identify Dialysis Patients at High Death Risk. Kidney Int Rep 2019; 4:1219-1229. [PMID: 31517141 PMCID: PMC6732773 DOI: 10.1016/j.ekir.2019.06.009] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2019] [Revised: 04/30/2019] [Accepted: 06/10/2019] [Indexed: 12/17/2022] Open
Abstract
Introduction Given the high mortality rate within the first year of dialysis initiation, an accurate estimation of postdialysis mortality could help patients and clinicians in decision making about initiation of dialysis. We aimed to use machine learning (ML) by incorporating complex information from electronic health records to predict patients at risk for postdialysis short-term mortality. Methods This study was carried out on a contemporary cohort of 27,615 US veterans with incident end-stage renal disease (ESRD). We implemented a random forest method on 49 variables obtained before dialysis transition to predict outcomes of 30-, 90-, 180-, and 365-day all-cause mortality after dialysis initiation. Results The mean (±SD) age of our cohort was 68.7 ± 11.2 years, 98.1% of patients were men, 29.4% were African American, and 71.4% were diabetic. The final random forest model provided C-statistics (95% confidence intervals) of 0.7185 (0.6994–0.7377), 0.7446 (0.7346–0.7546), 0.7504 (0.7425–0.7583), and 0.7488 (0.7421–0.7554) for predicting risk of death within the 4 different time windows. The models showed good internal validity and replicated well in patients with various demographic and clinical characteristics and provided similar or better performance compared with other ML algorithms. Results may not be generalizable to non-veterans. Use of predictors available in electronic medical records has limited the assessment of number of predictors. Conclusion We implemented and ML-based method to accurately predict short-term postdialysis mortality in patients with incident ESRD. Our models could aid patients and clinicians in better decision making about the best course of action in patients approaching ESRD.
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